def testAreaFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between areal units"""
expected = {QgsUnitTypes.AreaSquareMeters: {QgsUnitTypes.AreaSquareMeters: 1.0, QgsUnitTypes.AreaSquareKilometers: 1e-6, QgsUnitTypes.AreaSquareFeet: 10.7639104, QgsUnitTypes.AreaSquareYards: 1.19599, QgsUnitTypes.AreaSquareMiles: 3.86102e-7, QgsUnitTypes.AreaHectares: 0.0001, QgsUnitTypes.AreaAcres: 0.000247105, QgsUnitTypes.AreaSquareNauticalMiles: 2.91553e-7, QgsUnitTypes.AreaSquareDegrees: 0.000000000080697, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareKilometers: {QgsUnitTypes.AreaSquareMeters: 1e6, QgsUnitTypes.AreaSquareKilometers: 1, QgsUnitTypes.AreaSquareFeet: 10763910.4167097, QgsUnitTypes.AreaSquareYards: 1195990.04630108, QgsUnitTypes.AreaSquareMiles: 0.386102158, QgsUnitTypes.AreaHectares: 100, QgsUnitTypes.AreaAcres: 247.105381467, QgsUnitTypes.AreaSquareNauticalMiles: 0.291553349598, QgsUnitTypes.AreaSquareDegrees: 0.000080697034968, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareFeet: {QgsUnitTypes.AreaSquareMeters: 0.092903, QgsUnitTypes.AreaSquareKilometers: 9.2903e-8, QgsUnitTypes.AreaSquareFeet: 1.0, QgsUnitTypes.AreaSquareYards: 0.11111111111, QgsUnitTypes.AreaSquareMiles: 3.58701e-8, QgsUnitTypes.AreaHectares: 9.2903e-6, QgsUnitTypes.AreaAcres: 2.29568e-5, QgsUnitTypes.AreaSquareNauticalMiles: 2.70862e-8, QgsUnitTypes.AreaSquareDegrees: 0.000000000007497, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareYards: {QgsUnitTypes.AreaSquareMeters: 0.836127360, QgsUnitTypes.AreaSquareKilometers: 8.36127e-7, QgsUnitTypes.AreaSquareFeet: 9.0, QgsUnitTypes.AreaSquareYards: 1.0, QgsUnitTypes.AreaSquareMiles: 3.22831e-7, QgsUnitTypes.AreaHectares: 8.3612736E-5, QgsUnitTypes.AreaAcres: 0.00020661157, QgsUnitTypes.AreaSquareNauticalMiles: 2.43776e-7, QgsUnitTypes.AreaSquareDegrees: 0.000000000067473, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareMiles: {QgsUnitTypes.AreaSquareMeters: 2589988.110336, QgsUnitTypes.AreaSquareKilometers: 2.589988110, QgsUnitTypes.AreaSquareFeet: 27878400, QgsUnitTypes.AreaSquareYards: 3097600, QgsUnitTypes.AreaSquareMiles: 1.0, QgsUnitTypes.AreaHectares: 258.998811, QgsUnitTypes.AreaAcres: 640, QgsUnitTypes.AreaSquareNauticalMiles: 0.75511970898, QgsUnitTypes.AreaSquareDegrees: 0.000209004361107, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaHectares: {QgsUnitTypes.AreaSquareMeters: 10000, QgsUnitTypes.AreaSquareKilometers: 0.01, QgsUnitTypes.AreaSquareFeet: 107639.1041670972, QgsUnitTypes.AreaSquareYards: 11959.9004630, QgsUnitTypes.AreaSquareMiles: 0.00386102, QgsUnitTypes.AreaHectares: 1.0, QgsUnitTypes.AreaAcres: 2.471053814, QgsUnitTypes.AreaSquareNauticalMiles: 0.00291553, QgsUnitTypes.AreaSquareDegrees: 0.000000806970350, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaAcres: {QgsUnitTypes.AreaSquareMeters: 4046.8564224, QgsUnitTypes.AreaSquareKilometers: 0.00404686, QgsUnitTypes.AreaSquareFeet: 43560, QgsUnitTypes.AreaSquareYards: 4840, QgsUnitTypes.AreaSquareMiles: 0.0015625, QgsUnitTypes.AreaHectares: 0.404685642, QgsUnitTypes.AreaAcres: 1.0, QgsUnitTypes.AreaSquareNauticalMiles: 0.00117987, QgsUnitTypes.AreaSquareDegrees: 0.000000326569314, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareNauticalMiles: {QgsUnitTypes.AreaSquareMeters: 3429904, QgsUnitTypes.AreaSquareKilometers: 3.4299040, QgsUnitTypes.AreaSquareFeet: 36919179.39391434, QgsUnitTypes.AreaSquareYards: 4102131.04376826, QgsUnitTypes.AreaSquareMiles: 1.324293337, QgsUnitTypes.AreaHectares: 342.9904000000, QgsUnitTypes.AreaAcres: 847.54773631, QgsUnitTypes.AreaSquareNauticalMiles: 1.0, QgsUnitTypes.AreaSquareDegrees: 0.000276783083025, QgsUnitTypes.AreaUnknownUnit: 1.0},
QgsUnitTypes.AreaSquareDegrees: {QgsUnitTypes.AreaSquareMeters: 12392029030.5, QgsUnitTypes.AreaSquareKilometers: 12392.029030499, QgsUnitTypes.AreaSquareFeet: 133386690365.5682220, QgsUnitTypes.AreaSquareYards: 14820743373.9520263, QgsUnitTypes.AreaSquareMiles: 4784.5891573967, QgsUnitTypes.AreaHectares: 1239202.903050, QgsUnitTypes.AreaAcres: 3062137.060733889, QgsUnitTypes.AreaSquareNauticalMiles: 3612.93757215, QgsUnitTypes.AreaSquareDegrees: 1.0, QgsUnitTypes.AreaUnknownUnit: 1.0}}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(res,
expected_factor,
msg='got {:.15f}, expected {:.15f} when converting from {} to {}'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
#test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, QgsUnitTypes.AreaUnknownUnit)
self.assertAlmostEqual(res,
1.0,
msg='got {:.7f}, expected 1.0 when converting from {} to unknown units'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def testFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between units"""
expected = {QGis.Meters: {QGis.Meters: 1.0, QGis.Feet: 3.28083989501, QGis.Degrees: 0.00000898315, QGis.NauticalMiles: 0.000539957},
QGis.Feet: {QGis.Meters: 0.3048, QGis.Feet: 1.0, QGis.Degrees: 2.73806498599629E-06, QGis.NauticalMiles: 0.000164579},
QGis.Degrees: {QGis.Meters: 111319.49079327358, QGis.Feet: 365221.4264871, QGis.Degrees: 1.0, QGis.NauticalMiles: 60.1077164},
QGis.NauticalMiles: {QGis.Meters: 1852.0, QGis.Feet: 6076.1154856, QGis.Degrees: 0.0166367990650, QGis.NauticalMiles: 1.0},
QGis.UnknownUnit: {QGis.Meters: 1.0, QGis.Feet: 1.0, QGis.Degrees: 1.0, QGis.NauticalMiles: 1.0}
}
for from_unit in expected.keys():
for to_unit in expected[from_unit].keys():
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(res,
expected_factor,
msg='got {:.7f}, expected {:.7f} when converting from {} to {}'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
#test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, QGis.UnknownUnit)
self.assertAlmostEqual(res,
1.0,
msg='got {:.7f}, expected 1.0 when converting from {} to unknown units'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def testAreaUnitsToFromString(self):
"""Test converting area units to and from translated strings"""
units = [QgsUnitTypes.AreaSquareMeters,
QgsUnitTypes.AreaSquareKilometers,
QgsUnitTypes.AreaSquareFeet,
QgsUnitTypes.AreaSquareYards,
QgsUnitTypes.AreaSquareMiles,
QgsUnitTypes.AreaHectares,
QgsUnitTypes.AreaAcres,
QgsUnitTypes.AreaSquareNauticalMiles,
QgsUnitTypes.AreaSquareDegrees,
QgsUnitTypes.AreaSquareCentimeters,
QgsUnitTypes.AreaSquareMillimeters,
QgsUnitTypes.AreaUnknownUnit]
for u in units:
res, ok = QgsUnitTypes.stringToAreaUnit(QgsUnitTypes.toString(u))
assert ok
self.assertEqual(res, u)
# Test converting bad strings
res, ok = QgsUnitTypes.stringToAreaUnit('bad')
self.assertFalse(ok)
self.assertEqual(res, QgsUnitTypes.AreaUnknownUnit)
# Test that string is cleaned before conversion
res, ok = QgsUnitTypes.stringToAreaUnit(' {} '.format(QgsUnitTypes.toString(QgsUnitTypes.AreaSquareMiles).upper()))
assert ok
self.assertEqual(res, QgsUnitTypes.AreaSquareMiles)
def testEncodeDecodeAreaUnits(self):
"""Test encoding and decoding area units"""
units = [QgsUnitTypes.AreaSquareMeters,
QgsUnitTypes.AreaSquareKilometers,
QgsUnitTypes.AreaSquareFeet,
QgsUnitTypes.AreaSquareYards,
QgsUnitTypes.AreaSquareMiles,
QgsUnitTypes.AreaHectares,
QgsUnitTypes.AreaAcres,
QgsUnitTypes.AreaSquareNauticalMiles,
QgsUnitTypes.AreaSquareDegrees,
QgsUnitTypes.AreaSquareCentimeters,
QgsUnitTypes.AreaSquareMillimeters,
QgsUnitTypes.AreaUnknownUnit]
for u in units:
res, ok = QgsUnitTypes.decodeAreaUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeAreaUnit('bad')
self.assertFalse(ok)
self.assertEqual(res, QgsUnitTypes.AreaUnknownUnit)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeAreaUnit(' Ha ')
assert ok
self.assertEqual(res, QgsUnitTypes.AreaHectares)
def testEncodeDecodeDistanceUnits(self):
"""Test encoding and decoding distance units"""
units = [QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceKilometers,
QgsUnitTypes.DistanceFeet,
QgsUnitTypes.DistanceYards,
QgsUnitTypes.DistanceMiles,
QgsUnitTypes.DistanceDegrees,
QgsUnitTypes.DistanceCentimeters,
QgsUnitTypes.DistanceMillimeters,
QgsUnitTypes.DistanceUnknownUnit,
QgsUnitTypes.DistanceNauticalMiles]
for u in units:
res, ok = QgsUnitTypes.decodeDistanceUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeDistanceUnit('bad')
self.assertFalse(ok)
self.assertEqual(res, QgsUnitTypes.DistanceUnknownUnit)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeDistanceUnit(' FeEt ')
assert ok
self.assertEqual(res, QgsUnitTypes.DistanceFeet)
def test_ExpressionFieldEllipsoidLengthCalculation(self):
#create a temporary layer
temp_layer = QgsVectorLayer("LineString?crs=epsg:3111&field=pk:int", "vl", "memory")
self.assertTrue(temp_layer.isValid())
f1 = QgsFeature(temp_layer.dataProvider().fields(), 1)
f1.setAttribute("pk", 1)
f1.setGeometry(QgsGeometry.fromPolyline([QgsPoint(2484588, 2425722), QgsPoint(2482767, 2398853)]))
temp_layer.dataProvider().addFeatures([f1])
# set project CRS and ellipsoid
srs = QgsCoordinateReferenceSystem(3111, QgsCoordinateReferenceSystem.EpsgCrsId)
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCRSProj4String", srs.toProj4())
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCRSID", srs.srsid())
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCrs", srs.authid())
QgsProject.instance().writeEntry("Measure", "/Ellipsoid", "WGS84")
QgsProject.instance().writeEntry("Measurement", "/DistanceUnits", QgsUnitTypes.encodeUnit(QGis.Meters))
idx = temp_layer.addExpressionField('$length', QgsField('length', QVariant.Double)) # NOQA
# check value
f = temp_layer.getFeatures().next()
expected = 26932.156
self.assertAlmostEqual(f['length'], expected, 3)
# change project length unit, check calculation respects unit
QgsProject.instance().writeEntry("Measurement", "/DistanceUnits", QgsUnitTypes.encodeUnit(QGis.Feet))
f = temp_layer.getFeatures().next()
expected = 88360.0918635
self.assertAlmostEqual(f['length'], expected, 3)
def testAngleFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between angular units"""
expected = {QgsUnitTypes.AngleDegrees: {QgsUnitTypes.AngleDegrees: 1.0, QgsUnitTypes.AngleRadians: 0.0174533, QgsUnitTypes.AngleGon: 1.1111111, QgsUnitTypes.AngleMinutesOfArc: 60, QgsUnitTypes.AngleSecondsOfArc: 3600, QgsUnitTypes.AngleTurn: 0.00277777777778},
QgsUnitTypes.AngleRadians: {QgsUnitTypes.AngleDegrees: 57.2957795, QgsUnitTypes.AngleRadians: 1.0, QgsUnitTypes.AngleGon: 63.6619772, QgsUnitTypes.AngleMinutesOfArc: 3437.7467708, QgsUnitTypes.AngleSecondsOfArc: 206264.8062471, QgsUnitTypes.AngleTurn: 0.159154943092},
QgsUnitTypes.AngleGon: {QgsUnitTypes.AngleDegrees: 0.9000000, QgsUnitTypes.AngleRadians: 0.015707968623450838802, QgsUnitTypes.AngleGon: 1.0, QgsUnitTypes.AngleMinutesOfArc: 54.0000000, QgsUnitTypes.AngleSecondsOfArc: 3240.0000000, QgsUnitTypes.AngleTurn: 0.0025},
QgsUnitTypes.AngleMinutesOfArc: {QgsUnitTypes.AngleDegrees: 0.016666672633390722247, QgsUnitTypes.AngleRadians: 0.00029088831280398030638, QgsUnitTypes.AngleGon: 0.018518525464057963154, QgsUnitTypes.AngleMinutesOfArc: 1.0, QgsUnitTypes.AngleSecondsOfArc: 60.0, QgsUnitTypes.AngleTurn: 4.62962962962963e-05},
QgsUnitTypes.AngleSecondsOfArc: {QgsUnitTypes.AngleDegrees: 0.00027777787722304257169, QgsUnitTypes.AngleRadians: 4.848138546730629518e-6, QgsUnitTypes.AngleGon: 0.0003086420910674814405, QgsUnitTypes.AngleMinutesOfArc: 0.016666672633325253783, QgsUnitTypes.AngleSecondsOfArc: 1.0, QgsUnitTypes.AngleTurn: 7.71604938271605e-07},
QgsUnitTypes.AngleTurn: {QgsUnitTypes.AngleDegrees: 360.0, QgsUnitTypes.AngleRadians: 6.2831853071795, QgsUnitTypes.AngleGon: 400.0, QgsUnitTypes.AngleMinutesOfArc: 21600, QgsUnitTypes.AngleSecondsOfArc: 1296000, QgsUnitTypes.AngleTurn: 1}
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(res,
expected_factor,
msg='got {:.7f}, expected {:.7f} when converting from {} to {}'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
# test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, QgsUnitTypes.AngleUnknownUnit)
self.assertAlmostEqual(res,
1.0,
msg='got {:.7f}, expected 1.0 when converting from {} to unknown units'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def test_ExpressionFieldEllipsoidAreaCalculation(self):
#create a temporary layer
temp_layer = QgsVectorLayer("Polygon?crs=epsg:3111&field=pk:int", "vl", "memory")
self.assertTrue(temp_layer.isValid())
f1 = QgsFeature(temp_layer.dataProvider().fields(), 1)
f1.setAttribute("pk", 1)
f1.setGeometry(QgsGeometry.fromPolygon([[QgsPoint(2484588, 2425722), QgsPoint(2482767, 2398853), QgsPoint(2520109, 2397715), QgsPoint(2520792, 2425494), QgsPoint(2484588, 2425722)]]))
temp_layer.dataProvider().addFeatures([f1])
# set project CRS and ellipsoid
srs = QgsCoordinateReferenceSystem(3111, QgsCoordinateReferenceSystem.EpsgCrsId)
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCRSProj4String", srs.toProj4())
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCRSID", srs.srsid())
QgsProject.instance().writeEntry("SpatialRefSys", "/ProjectCrs", srs.authid())
QgsProject.instance().writeEntry("Measure", "/Ellipsoid", "WGS84")
QgsProject.instance().writeEntry("Measurement", "/AreaUnits", QgsUnitTypes.encodeUnit(QgsUnitTypes.SquareMeters))
idx = temp_layer.addExpressionField('$area', QgsField('area', QVariant.Double)) # NOQA
# check value
f = temp_layer.getFeatures().next()
expected = 1009089817.0
self.assertAlmostEqual(f['area'], expected, delta=1.0)
# change project area unit, check calculation respects unit
QgsProject.instance().writeEntry("Measurement", "/AreaUnits", QgsUnitTypes.encodeUnit(QgsUnitTypes.SquareMiles))
f = temp_layer.getFeatures().next()
expected = 389.6117565069
self.assertAlmostEqual(f['area'], expected, 3)
def testEncodeDecodeLayoutUnits(self):
"""Test encoding and decoding layout units"""
units = [QgsUnitTypes.LayoutMillimeters,
QgsUnitTypes.LayoutCentimeters,
QgsUnitTypes.LayoutMeters,
QgsUnitTypes.LayoutInches,
QgsUnitTypes.LayoutFeet,
QgsUnitTypes.LayoutPoints,
QgsUnitTypes.LayoutPicas,
QgsUnitTypes.LayoutPixels]
for u in units:
res, ok = QgsUnitTypes.decodeLayoutUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeLayoutUnit('bad')
self.assertFalse(ok)
# default units should be MM
self.assertEqual(res, QgsUnitTypes.LayoutMillimeters)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeLayoutUnit(' px ')
assert ok
self.assertEqual(res, QgsUnitTypes.LayoutPixels)
def testEncodeDecodeAngleUnits(self):
"""Test encoding and decoding angle units"""
units = [
QgsUnitTypes.AngleDegrees,
QgsUnitTypes.Radians,
QgsUnitTypes.Gon,
QgsUnitTypes.MinutesOfArc,
QgsUnitTypes.SecondsOfArc,
QgsUnitTypes.Turn,
QgsUnitTypes.UnknownAngleUnit,
]
for u in units:
res, ok = QgsUnitTypes.decodeAngleUnit(QgsUnitTypes.encodeUnit(u))
assert ok, "could not decode unit {}".format(QgsUnitTypes.toString(u))
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeAngleUnit("bad")
self.assertFalse(ok)
self.assertEqual(res, QgsUnitTypes.UnknownAngleUnit)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeAngleUnit(" MoA ")
assert ok
self.assertEqual(res, QgsUnitTypes.MinutesOfArc)
def testFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between units"""
expected = {QgsUnitTypes.DistanceMeters: {QgsUnitTypes.DistanceMeters: 1.0, QgsUnitTypes.DistanceKilometers: 0.001, QgsUnitTypes.DistanceFeet: 3.28083989501, QgsUnitTypes.DistanceYards: 1.0936133, QgsUnitTypes.DistanceMiles: 0.00062136931818182, QgsUnitTypes.DistanceDegrees: 0.00000898315, QgsUnitTypes.DistanceNauticalMiles: 0.000539957},
QgsUnitTypes.DistanceKilometers: {QgsUnitTypes.DistanceMeters: 1000.0, QgsUnitTypes.DistanceKilometers: 1.0, QgsUnitTypes.DistanceFeet: 3280.8398950, QgsUnitTypes.DistanceYards: 1093.6132983, QgsUnitTypes.DistanceMiles: 0.62137121212119317271, QgsUnitTypes.DistanceDegrees: 0.0089832, QgsUnitTypes.DistanceNauticalMiles: 0.53995682073432482717},
QgsUnitTypes.DistanceFeet: {QgsUnitTypes.DistanceMeters: 0.3048, QgsUnitTypes.DistanceKilometers: 0.0003048, QgsUnitTypes.DistanceFeet: 1.0, QgsUnitTypes.DistanceYards: 0.3333333, QgsUnitTypes.DistanceMiles: 0.00018939375, QgsUnitTypes.DistanceDegrees: 2.73806498599629E-06, QgsUnitTypes.DistanceNauticalMiles: 0.000164579},
QgsUnitTypes.DistanceYards: {QgsUnitTypes.DistanceMeters: 0.9144, QgsUnitTypes.DistanceKilometers: 0.0009144, QgsUnitTypes.DistanceFeet: 3.0, QgsUnitTypes.DistanceYards: 1.0, QgsUnitTypes.DistanceMiles: 0.000568182, QgsUnitTypes.DistanceDegrees: 0.0000082, QgsUnitTypes.DistanceNauticalMiles: 0.0004937366590756},
QgsUnitTypes.DistanceDegrees: {QgsUnitTypes.DistanceMeters: 111319.49079327358, QgsUnitTypes.DistanceKilometers: 111.3194908, QgsUnitTypes.DistanceFeet: 365221.4264871, QgsUnitTypes.DistanceYards: 121740.4754957, QgsUnitTypes.DistanceMiles: 69.1707247, QgsUnitTypes.DistanceDegrees: 1.0, QgsUnitTypes.DistanceNauticalMiles: 60.1077164},
QgsUnitTypes.DistanceMiles: {QgsUnitTypes.DistanceMeters: 1609.3440000, QgsUnitTypes.DistanceKilometers: 1.6093440, QgsUnitTypes.DistanceFeet: 5280.0000000, QgsUnitTypes.DistanceYards: 1760.0000000, QgsUnitTypes.DistanceMiles: 1.0, QgsUnitTypes.DistanceDegrees: 0.0144570, QgsUnitTypes.DistanceNauticalMiles: 0.8689762},
QgsUnitTypes.DistanceNauticalMiles: {QgsUnitTypes.DistanceMeters: 1852.0, QgsUnitTypes.DistanceKilometers: 1.8520000, QgsUnitTypes.DistanceFeet: 6076.1154856, QgsUnitTypes.DistanceYards: 2025.3718285, QgsUnitTypes.DistanceMiles: 1.1507794, QgsUnitTypes.DistanceDegrees: 0.0166367990650, QgsUnitTypes.DistanceNauticalMiles: 1.0},
QgsUnitTypes.DistanceUnknownUnit: {QgsUnitTypes.DistanceMeters: 1.0, QgsUnitTypes.DistanceKilometers: 1.0, QgsUnitTypes.DistanceFeet: 1.0, QgsUnitTypes.DistanceYards: 1.0, QgsUnitTypes.DistanceMiles: 1.0, QgsUnitTypes.DistanceDegrees: 1.0, QgsUnitTypes.DistanceNauticalMiles: 1.0}
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(res,
expected_factor,
msg='got {:.7f}, expected {:.7f} when converting from {} to {}'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
#test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, QgsUnitTypes.DistanceUnknownUnit)
self.assertAlmostEqual(res,
1.0,
msg='got {:.7f}, expected 1.0 when converting from {} to unknown units'.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def testLengthMeasureAndUnits(self):
"""Test a variety of length measurements in different CRS and ellipsoid modes, to check that the
calculated lengths and units are always consistent
"""
da = QgsDistanceArea()
da.setSourceCrs(QgsCoordinateReferenceSystem.fromSrsId(3452), QgsProject.instance().transformContext())
da.setEllipsoid("NONE")
# We check both the measured length AND the units, in case the logic regarding
# ellipsoids and units changes in future
distance = da.measureLine(QgsPointXY(1, 1), QgsPointXY(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance, QgsUnitTypes.toString(units))))
assert ((abs(distance - 2.23606797) < 0.00000001 and units == QgsUnitTypes.DistanceDegrees) or
(abs(distance - 248.52) < 0.01 and units == QgsUnitTypes.DistanceMeters))
da.setEllipsoid("WGS84")
distance = da.measureLine(QgsPointXY(1, 1), QgsPointXY(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance, QgsUnitTypes.toString(units))))
# should always be in Meters
self.assertAlmostEqual(distance, 247555.57, delta=0.01)
self.assertEqual(units, QgsUnitTypes.DistanceMeters)
# test converting the resultant length
distance = da.convertLengthMeasurement(distance, QgsUnitTypes.DistanceNauticalMiles)
self.assertAlmostEqual(distance, 133.669, delta=0.01)
# now try with a source CRS which is in feet
da.setSourceCrs(QgsCoordinateReferenceSystem.fromSrsId(27469), QgsProject.instance().transformContext())
da.setEllipsoid("NONE")
# measurement should be in feet
distance = da.measureLine(QgsPointXY(1, 1), QgsPointXY(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(distance, 2.23606797, delta=0.000001)
self.assertEqual(units, QgsUnitTypes.DistanceFeet)
# test converting the resultant length
distance = da.convertLengthMeasurement(distance, QgsUnitTypes.DistanceMeters)
self.assertAlmostEqual(distance, 0.6815, delta=0.001)
da.setEllipsoid("WGS84")
# now should be in Meters again
distance = da.measureLine(QgsPointXY(1, 1), QgsPointXY(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(distance, 0.67953772, delta=0.000001)
self.assertEqual(units, QgsUnitTypes.DistanceMeters)
# test converting the resultant length
distance = da.convertLengthMeasurement(distance, QgsUnitTypes.DistanceFeet)
self.assertAlmostEqual(distance, 2.2294, delta=0.001)
def testLengthMeasureAndUnits(self):
"""Test a variety of length measurements in different CRS and ellipsoid modes, to check that the
calculated lengths and units are always consistent
"""
da = QgsDistanceArea()
da.setSourceCrs(3452)
da.setEllipsoidalMode(False)
da.setEllipsoid("NONE")
daCRS = QgsCoordinateReferenceSystem()
daCRS.createFromSrsId(da.sourceCrs())
# We check both the measured length AND the units, in case the logic regarding
# ellipsoids and units changes in future
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print "measured {} in {}".format(distance, QgsUnitTypes.toString(units))
assert ((abs(distance - 2.23606797) < 0.00000001 and units == QGis.Degrees) or
(abs(distance - 248.52) < 0.01 and units == QGis.Meters))
da.setEllipsoid("WGS84")
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print "measured {} in {}".format(distance, QgsUnitTypes.toString(units))
assert ((abs(distance - 2.23606797) < 0.00000001 and units == QGis.Degrees) or
(abs(distance - 248.52) < 0.01 and units == QGis.Meters))
da.setEllipsoidalMode(True)
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print "measured {} in {}".format(distance, QgsUnitTypes.toString(units))
# should always be in Meters
self.assertAlmostEqual(distance, 247555.57, delta=0.01)
self.assertEqual(units, QGis.Meters)
# now try with a source CRS which is in feet
da.setSourceCrs(27469)
da.setEllipsoidalMode(False)
# measurement should be in feet
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print "measured {} in {}".format(distance, QgsUnitTypes.toString(units))
self.assertAlmostEqual(distance, 2.23606797, delta=0.000001)
self.assertEqual(units, QGis.Feet)
da.setEllipsoidalMode(True)
# now should be in Meters again
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print "measured {} in {}".format(distance, QgsUnitTypes.toString(units))
self.assertAlmostEqual(distance, 0.67953772, delta=0.000001)
self.assertEqual(units, QGis.Meters)
def setUnits(self, units):
self.label.setText(QgsUnitTypes.toString(units))
if QgsUnitTypes.unitType(units) != QgsUnitTypes.Standard:
self.units_combo.hide()
self.label.show()
else:
self.units_combo.setCurrentIndex(self.units_combo.findData(units))
self.units_combo.show()
self.label.hide()
self.warning_label.setVisible(units == QgsUnitTypes.DistanceDegrees)
self.base_units = units
def __init__(self, param):
super().__init__(param)
self.label = QLabel('')
self.units_combo = QComboBox()
self.base_units = QgsUnitTypes.DistanceUnknownUnit
for u in (QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceKilometers,
QgsUnitTypes.DistanceFeet,
QgsUnitTypes.DistanceMiles,
QgsUnitTypes.DistanceYards):
self.units_combo.addItem(QgsUnitTypes.toString(u), u)
label_margin = self.fontMetrics().width('X')
self.layout().insertSpacing(1, label_margin / 2)
self.layout().insertWidget(2, self.label)
self.layout().insertWidget(3, self.units_combo)
self.layout().insertSpacing(4, label_margin / 2)
self.warning_label = QLabel()
icon = QgsApplication.getThemeIcon('mIconWarning.svg')
size = max(24, self.spnValue.height() * 0.5)
self.warning_label.setPixmap(icon.pixmap(icon.actualSize(QSize(size, size))))
self.warning_label.setToolTip(self.tr('Distance is in geographic degrees. Consider reprojecting to a projected local coordinate system for accurate results.'))
self.layout().insertWidget(4, self.warning_label)
self.layout().insertSpacing(5, label_margin)
self.setUnits(QgsUnitTypes.DistanceUnknownUnit)
def createBackgroundSettings(self):
s = QgsTextBackgroundSettings()
s.setEnabled(True)
s.setType(QgsTextBackgroundSettings.ShapeEllipse)
s.setSvgFile('svg.svg')
s.setSizeType(QgsTextBackgroundSettings.SizeFixed)
s.setSize(QSizeF(1, 2))
s.setSizeUnit(QgsUnitTypes.RenderPixels)
s.setSizeMapUnitScale(QgsMapUnitScale(1, 2))
s.setRotationType(QgsTextBackgroundSettings.RotationFixed)
s.setRotation(45)
s.setOffset(QPointF(3, 4))
s.setOffsetUnit(QgsUnitTypes.RenderMapUnits)
s.setOffsetMapUnitScale(QgsMapUnitScale(5, 6))
s.setRadii(QSizeF(11, 12))
s.setRadiiUnit(QgsUnitTypes.RenderPixels)
s.setRadiiMapUnitScale(QgsMapUnitScale(15, 16))
s.setFillColor(QColor(255, 0, 0))
s.setStrokeColor(QColor(0, 255, 0))
s.setOpacity(0.5)
s.setJoinStyle(Qt.RoundJoin)
s.setBlendMode(QPainter.CompositionMode_Difference)
s.setStrokeWidth(7)
s.setStrokeWidthUnit(QgsUnitTypes.RenderMapUnits)
s.setStrokeWidthMapUnitScale(QgsMapUnitScale(QgsMapUnitScale(25, 26)))
s.setPaintEffect(QgsBlurEffect.create({'blur_level': '6.0', 'blur_unit': QgsUnitTypes.encodeUnit(QgsUnitTypes.RenderMillimeters), 'enabled': '1'}))
return s
def getValue(self):
val = super().getValue()
if isinstance(val, float) and self.units_combo.isVisible():
display_unit = self.units_combo.currentData()
return val * QgsUnitTypes.fromUnitToUnitFactor(display_unit, self.base_units)
return val
def testAbbreviateRenderUnits(self):
"""Test abbreviating render units"""
units = [QgsUnitTypes.RenderMillimeters,
QgsUnitTypes.RenderMapUnits,
QgsUnitTypes.RenderPixels,
QgsUnitTypes.RenderPercentage,
QgsUnitTypes.RenderPoints,
QgsUnitTypes.RenderInches,
QgsUnitTypes.RenderUnknownUnit,
QgsUnitTypes.RenderMetersInMapUnits]
used = set()
for u in units:
self.assertTrue(QgsUnitTypes.toString(u))
self.assertTrue(QgsUnitTypes.toAbbreviatedString(u))
self.assertFalse(QgsUnitTypes.toAbbreviatedString(u) in used)
used.add(QgsUnitTypes.toAbbreviatedString(u))
def testAbbreviateLayoutUnits(self):
"""Test abbreviating layout units"""
units = [QgsUnitTypes.LayoutMillimeters,
QgsUnitTypes.LayoutCentimeters,
QgsUnitTypes.LayoutMeters,
QgsUnitTypes.LayoutInches,
QgsUnitTypes.LayoutFeet,
QgsUnitTypes.LayoutPoints,
QgsUnitTypes.LayoutPicas,
QgsUnitTypes.LayoutPixels]
used = set()
for u in units:
self.assertTrue(QgsUnitTypes.toString(u))
self.assertTrue(QgsUnitTypes.toAbbreviatedString(u))
self.assertFalse(QgsUnitTypes.toAbbreviatedString(u) in used)
used.add(QgsUnitTypes.toAbbreviatedString(u))
def testEncodeDecodeRenderUnits(self):
"""Test encoding and decoding render units"""
units = [QgsUnitTypes.RenderMillimeters,
QgsUnitTypes.RenderMapUnits,
QgsUnitTypes.RenderPixels,
QgsUnitTypes.RenderPercentage,
QgsUnitTypes.RenderPoints]
for u in units:
res, ok = QgsUnitTypes.decodeRenderUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeRenderUnit('bad')
self.assertFalse(ok)
# default units should be MM
self.assertEqual(res, QgsUnitTypes.RenderMillimeters)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeRenderUnit(' PiXeL ')
assert ok
self.assertEqual(res, QgsUnitTypes.RenderPixels)
# check some aliases - used in data defined labeling
res, ok = QgsUnitTypes.decodeRenderUnit('MapUnits')
assert ok
self.assertEqual(res, QgsUnitTypes.RenderMapUnits)
res, ok = QgsUnitTypes.decodeRenderUnit('Percent')
assert ok
self.assertEqual(res, QgsUnitTypes.RenderPercentage)
res, ok = QgsUnitTypes.decodeRenderUnit('Points')
assert ok
self.assertEqual(res, QgsUnitTypes.RenderPoints)
def testEncodeDecodeDistanceUnits(self):
"""Test encoding and decoding distance units"""
units = [QGis.Meters, QGis.Feet, QGis.Degrees, QGis.UnknownUnit, QGis.NauticalMiles]
for u in units:
res, ok = QgsUnitTypes.decodeDistanceUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeDistanceUnit("bad")
self.assertFalse(ok)
self.assertEqual(res, QGis.UnknownUnit)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeDistanceUnit(" FeEt ")
assert ok
self.assertEqual(res, QGis.Feet)
def testEncodeDecodeSymbolUnits(self):
"""Test encoding and decoding symbol units"""
units = [QgsSymbolV2.MM, QgsSymbolV2.MapUnit, QgsSymbolV2.Pixel, QgsSymbolV2.Percentage]
for u in units:
res, ok = QgsUnitTypes.decodeSymbolUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeSymbolUnit("bad")
self.assertFalse(ok)
# default units should be MM
self.assertEqual(res, QgsSymbolV2.MM)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeSymbolUnit(" PiXeL ")
assert ok
self.assertEqual(res, QgsSymbolV2.Pixel)
def testFormatAngle(self):
"""Test formatting angles"""
self.assertEqual(QgsUnitTypes.formatAngle(45, 3, QgsUnitTypes.AngleDegrees), u"45.000°")
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.Radians), "1.00 rad")
self.assertEqual(QgsUnitTypes.formatAngle(1, 0, QgsUnitTypes.Gon), u"1 gon")
self.assertEqual(QgsUnitTypes.formatAngle(1.11111111, 4, QgsUnitTypes.MinutesOfArc), u"1.1111′")
self.assertEqual(QgsUnitTypes.formatAngle(1.99999999, 2, QgsUnitTypes.SecondsOfArc), u"2.00″")
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.Turn), u"1.00 tr")
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.UnknownAngleUnit), u"1.00")
def testFormatAngle(self):
"""Test formatting angles"""
self.assertEqual(QgsUnitTypes.formatAngle(45, 3, QgsUnitTypes.AngleDegrees), '45.000°')
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.AngleRadians), '1.00 rad')
self.assertEqual(QgsUnitTypes.formatAngle(1, 0, QgsUnitTypes.AngleGon), '1 gon')
self.assertEqual(QgsUnitTypes.formatAngle(1.11111111, 4, QgsUnitTypes.AngleMinutesOfArc), '1.1111′')
self.assertEqual(QgsUnitTypes.formatAngle(1.99999999, 2, QgsUnitTypes.AngleSecondsOfArc), '2.00″')
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.AngleTurn), '1.00 tr')
self.assertEqual(QgsUnitTypes.formatAngle(1, 2, QgsUnitTypes.AngleUnknownUnit), '1.00')
def testDistanceUnitType(self):
"""Test QgsUnitTypes::unitType() """
expected = {QGis.Meters: QgsUnitTypes.Standard,
QGis.Feet: QgsUnitTypes.Standard,
QGis.Degrees: QgsUnitTypes.Geographic,
QGis.UnknownUnit: QgsUnitTypes.UnknownType,
QGis.NauticalMiles: QgsUnitTypes.Standard
}
for t in expected.keys():
self.assertEqual(QgsUnitTypes.unitType(t), expected[t])
def testRenderUnitsString(self):
"""Test converting render units to strings"""
units = [QgsUnitTypes.RenderMillimeters,
QgsUnitTypes.RenderMapUnits,
QgsUnitTypes.RenderPixels,
QgsUnitTypes.RenderPercentage,
QgsUnitTypes.RenderPoints,
QgsUnitTypes.RenderInches]
for u in units:
self.assertTrue(QgsUnitTypes.toString(u))
def testDistanceToAreaUnit(self):
"""Test distanceToAreaUnit conversion"""
expected = {
QGis.Meters: QgsUnitTypes.SquareMeters,
QGis.Feet: QgsUnitTypes.SquareFeet,
QGis.Degrees: QgsUnitTypes.SquareDegrees,
QGis.UnknownUnit: QgsUnitTypes.UnknownAreaUnit,
QGis.NauticalMiles: QgsUnitTypes.SquareNauticalMiles,
}
for t in expected.keys():
self.assertEqual(QgsUnitTypes.distanceToAreaUnit(t), expected[t])
def testDistanceUnitsToFromString(self):
"""Test converting distance units to and from translated strings"""
units = [QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceKilometers,
QgsUnitTypes.DistanceFeet,
QgsUnitTypes.DistanceYards,
QgsUnitTypes.DistanceMiles,
QgsUnitTypes.DistanceDegrees,
QgsUnitTypes.DistanceCentimeters,
QgsUnitTypes.DistanceMillimeters,
QgsUnitTypes.DistanceUnknownUnit,
QgsUnitTypes.DistanceNauticalMiles]
for u in units:
res, ok = QgsUnitTypes.stringToDistanceUnit(QgsUnitTypes.toString(u))
assert ok
self.assertEqual(res, u)
# Test converting bad strings
res, ok = QgsUnitTypes.stringToDistanceUnit('bad')
self.assertFalse(ok)
self.assertEqual(res, QgsUnitTypes.DistanceUnknownUnit)
# Test that string is cleaned before conversion
res, ok = QgsUnitTypes.stringToDistanceUnit(' {} '.format(QgsUnitTypes.toString(QgsUnitTypes.DistanceFeet).upper()))
print((' {} '.format(QgsUnitTypes.toString(QgsUnitTypes.DistanceFeet).upper())))
assert ok
self.assertEqual(res, QgsUnitTypes.DistanceFeet)
def testEncodeDecodeRenderUnits(self):
"""Test encoding and decoding render units"""
units = [QgsUnitTypes.RenderMillimeters,
QgsUnitTypes.RenderMapUnits,
QgsUnitTypes.RenderPixels,
QgsUnitTypes.RenderPercentage]
for u in units:
res, ok = QgsUnitTypes.decodeRenderUnit(QgsUnitTypes.encodeUnit(u))
assert ok
self.assertEqual(res, u)
# Test decoding bad units
res, ok = QgsUnitTypes.decodeRenderUnit('bad')
self.assertFalse(ok)
# default units should be MM
self.assertEqual(res, QgsUnitTypes.RenderMillimeters)
# Test that string is cleaned before decoding
res, ok = QgsUnitTypes.decodeRenderUnit(' PiXeL ')
assert ok
self.assertEqual(res, QgsUnitTypes.RenderPixels)
def createBufferSettings(self):
s = QgsTextBufferSettings()
s.setEnabled(True)
s.setSize(5)
s.setSizeUnit(QgsUnitTypes.RenderPixels)
s.setSizeMapUnitScale(QgsMapUnitScale(1, 2))
s.setColor(QColor(255, 0, 0))
s.setFillBufferInterior(True)
s.setOpacity(0.5)
s.setJoinStyle(Qt.RoundJoin)
s.setBlendMode(QPainter.CompositionMode_Difference)
s.setPaintEffect(QgsBlurEffect.create({'blur_level': '2.0', 'blur_unit': QgsUnitTypes.encodeUnit(QgsUnitTypes.RenderMillimeters), 'enabled': '1'}))
return s
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoint = self.parameterAsPoint(parameters, self.START_POINT,
context, network.sourceCrs())
endPoint = self.parameterAsPoint(parameters, self.END_POINT, context,
network.sourceCrs())
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
fields = QgsFields()
fields.append(QgsField('start', QVariant.String, '', 254, 0))
fields.append(QgsField('end', QVariant.String, '', 254, 0))
fields.append(QgsField('cost', QVariant.Double, '', 20, 7))
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT,
context, fields,
QgsWkbTypes.LineString,
network.sourceCrs())
directionField = -1
if directionField:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
multiplier = 3600
director.addStrategy(strategy)
builder = QgsGraphBuilder(network.sourceCrs(), True, tolerance)
feedback.pushInfo(
QCoreApplication.translate('ShortestPathPointToPoint',
'Building graph…'))
snappedPoints = director.makeGraph(builder, [startPoint, endPoint],
feedback)
feedback.pushInfo(
QCoreApplication.translate('ShortestPathPointToPoint',
'Calculating shortest path…'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
idxEnd = graph.findVertex(snappedPoints[1])
tree, costs = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
if tree[idxEnd] == -1:
raise QgsProcessingException(
self.tr('There is no route from start point to end point.'))
route = [graph.vertex(idxEnd).point()]
cost = costs[idxEnd]
current = idxEnd
while current != idxStart:
current = graph.edge(tree[current]).fromVertex()
route.append(graph.vertex(current).point())
route.reverse()
feedback.pushInfo(
QCoreApplication.translate('ShortestPathPointToPoint',
'Writing results…'))
geom = QgsGeometry.fromPolylineXY(route)
feat = QgsFeature()
feat.setFields(fields)
feat['start'] = startPoint.toString()
feat['end'] = endPoint.toString()
feat['cost'] = cost / multiplier
feat.setGeometry(geom)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
results = {}
results[self.TRAVEL_COST] = cost / multiplier
results[self.OUTPUT] = dest_id
return results
def __init__(
self,
input_network, #QgsProcessingParameterFeatureSource
input_points, #[QgsPointXY] or QgsProcessingParameterFeatureSource or QgsVectorLayer --> Implement List of QgsFeatures [QgsFeatures]
input_strategy, #int
input_directionFieldName, #str, empty if field not given
input_forwardValue, #str
input_backwardValue, #str
input_bothValue, #str
input_defaultDirection, #int
input_analysisCrs, #QgsCoordinateReferenceSystem
input_speedField, #str
input_defaultSpeed, #float
input_tolerance, #float
feedback #feedback object from processing (log window)
):
"""
Constructor for a Qneat3Network object.
@type input_network: QgsProcessingParameterFeatureSource
@param input_network: input network dataset from processing algorithm
@type input_points: QgsProcessingParameterFeatureSource/QgsVectorLayer/[QgsPointXY]
@param input_points: input point dataset from processing algorithm
@type input_strategy: int
@param input_strategy: Strategy parameter (0 for distance evaluation, 1 time evaluation)
@type directionFieldName: string
@param directionFieldName: Field name of field containing direction information
@type input_forwardValue: string
@param input_forwardValue: Value assigned to forward-directed edges
@type input_backwardValue: string
@param input_backwardValue: Value assigned to backward-directed edges
@type input_bothValue: string
@param input_bothValues: Value assigned to undirected edges (accessible from both directions)
@type input_defaultDirection: QgsVectorLayerDirector.DirectionForward/DirectionBackward/DirectionBoth
@param input_defaultDirection: QgsVectorLayerDirector Direction enum to determine default direction
@type input_analysisCrs: QgsCoordinateReferenceSystem
@param input_analysisCrs: Analysis coordinate system
@type input_speedField: string
@param input_speedField: Field name of field containing speed information
@type input_tolerance: float
@param input_tolerance: tolerance value when connecting graph edges
@type feedback: QgsProcessingFeedback
@param feedback: feedback object from processing algorithm
"""
#initialize feedback
self.feedback = feedback
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Setting up parameters")
self.AnalysisCrs = input_analysisCrs
#enable polygon calculation in geographic coordinate systems
distUnit = self.AnalysisCrs.mapUnits()
self.meter_to_unit_factor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceMeters, distUnit)
#init direction fields
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Setting up network direction parameters"
)
self.directedAnalysis = self.setNetworkDirection(
(input_directionFieldName, input_forwardValue, input_backwardValue,
input_bothValue, input_defaultDirection))
self.director = QgsVectorLayerDirector(
input_network,
getFieldIndexFromQgsProcessingFeatureSource(
input_network, input_directionFieldName), input_forwardValue,
input_backwardValue, input_bothValue, input_defaultDirection)
#init analysis points
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Setting up analysis points")
if isinstance(input_points, (list, )):
self.list_input_points = input_points #[QgsPointXY]
else:
self.list_input_points = getListOfPoints(
input_points) #[QgsPointXY]
self.input_points = input_points
#Setup cost-strategy pattern.
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Setting analysis strategy: {}".format(
input_strategy))
self.default_speed = input_defaultSpeed
self.setNetworkStrategy(input_strategy, input_network,
input_speedField, input_defaultSpeed)
#add the strategy to the QgsGraphDirector
self.director.addStrategy(self.strategy)
self.builder = QgsGraphBuilder(self.AnalysisCrs, True, input_tolerance)
#tell the graph-director to make the graph using the builder object and tie the start point geometry to the graph
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Start tying analysis points to the graph and building it."
)
self.feedback.pushInfo(
"[QNEAT3Network][__init__] This is a compute intensive task and may take some time depending on network size"
)
start_local_time = time.localtime()
start_time = time.time()
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Start Time: {}".format(
time.strftime(":%Y-%m-%d %H:%M:%S", start_local_time)))
self.feedback.pushInfo("[QNEAT3Network][__init__] Building...")
self.list_tiedPoints = self.director.makeGraph(self.builder,
self.list_input_points,
self.feedback)
self.network = self.builder.graph()
end_local_time = time.localtime()
end_time = time.time()
self.feedback.pushInfo("[QNEAT3Network][__init__] End Time: {}".format(
time.strftime(":%Y-%m-%d %H:%M:%S", end_local_time)))
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Total Build Time: {}".format(
end_time - start_time))
self.feedback.pushInfo(
"[QNEAT3Network][__init__] Analysis setup complete")
def restore(file_path):
from AcATaMa.gui.acatama_dockwidget import AcATaMaDockWidget as AcATaMa
# load the yaml file
import yaml
with open(file_path, 'r') as yaml_file:
try:
yaml_config = yaml.load(yaml_file, Loader=yaml.FullLoader)
except yaml.YAMLError as err:
iface.messageBar().pushMessage("AcATaMa", "Error while read the AcATaMa configuration file: {}".format(err),
level=Qgis.Critical)
return
# ######### general configuration ######### #
if "general" in yaml_config:
AcATaMa.dockwidget.tabWidget.setCurrentIndex(yaml_config["general"]["tab_activated"])
# restore the thematic raster
if yaml_config["thematic_raster"]["path"]:
# thematic raster
load_and_select_filepath_in(AcATaMa.dockwidget.QCBox_ThematicRaster,
yaml_config["thematic_raster"]["path"])
AcATaMa.dockwidget.select_thematic_raster(AcATaMa.dockwidget.QCBox_ThematicRaster.currentLayer())
# band number
if "band" in yaml_config["thematic_raster"]:
AcATaMa.dockwidget.QCBox_band_ThematicRaster.setCurrentIndex(yaml_config["thematic_raster"]["band"] - 1)
# nodata
AcATaMa.dockwidget.nodata_ThematicRaster.setValue(yaml_config["thematic_raster"]["nodata"])
# ######### classification configuration ######### #
# restore the classification settings
# load the sampling file save in yaml config
sampling_filepath = yaml_config["sampling_layer"]
if os.path.isfile(sampling_filepath):
sampling_layer = load_and_select_filepath_in(AcATaMa.dockwidget.QCBox_SamplingFile, sampling_filepath)
classification = Classification(sampling_layer)
AcATaMa.dockwidget.grid_columns.setValue(yaml_config["grid_view_widgets"]["columns"])
AcATaMa.dockwidget.grid_rows.setValue(yaml_config["grid_view_widgets"]["rows"])
classification.dialog_size = yaml_config["dialog_size"]
classification.grid_columns = yaml_config["grid_view_widgets"]["columns"]
classification.grid_rows = yaml_config["grid_view_widgets"]["rows"]
classification.current_sample_idx = yaml_config["current_sample_idx"]
classification.fit_to_sample = yaml_config["fit_to_sample"]
classification.is_completed = yaml_config["is_completed"]
# restore the buttons config
classification.buttons_config = yaml_config["classification_buttons"]
# restore the view widget config
classification.view_widgets_config = yaml_config["view_widgets_config"]
# support load the old format of config file TODO: delete
for x in classification.view_widgets_config.values():
if "render_file" in x:
x["render_file_path"] = x["render_file"]
del x["render_file"]
if "name" in x:
x["view_name"] = x["name"]
del x["name"]
if "layer_name" not in x:
x["layer_name"] = None
# restore the samples order
points_ordered = []
for shape_id in yaml_config["points_order"]:
# point saved exist in shape file
if shape_id in [p.shape_id for p in classification.points]:
points_ordered.append([p for p in classification.points if p.shape_id == shape_id][0])
# added new point inside shape file that not exists in yaml config
for new_point_id in set([p.shape_id for p in classification.points]) - set(yaml_config["points_order"]):
points_ordered.append([p for p in classification.points if p.shape_id == new_point_id][0])
# reassign points loaded and ordered
classification.points = points_ordered
# restore point status classification
for status in yaml_config["points"].values():
if status["shape_id"] in [p.shape_id for p in classification.points]:
point_to_restore = [p for p in classification.points if p.shape_id == status["shape_id"]][0]
point_to_restore.classif_id = status["classif_id"]
if point_to_restore.classif_id is not None:
point_to_restore.is_classified = True
# update the status and labels plugin with the current sampling classification
classification.reload_classification_status()
AcATaMa.dockwidget.update_the_status_of_classification()
# define if this classification was made with thematic classes
if classification.buttons_config and yaml_config["thematic_raster"]["path"] and \
True in [bc["thematic_class"] is not None and bc["thematic_class"] != "" for bc in classification.buttons_config.values()]:
classification.with_thematic_classes = True
else:
classification = None
# ######### accuracy assessment ######### #
# restore accuracy assessment settings
# support load the old format of config file TODO: delete
if "accuracy_assessment_sampling_file" in yaml_config and yaml_config["accuracy_assessment_sampling_file"]:
load_and_select_filepath_in(AcATaMa.dockwidget.QCBox_SamplingFile_AA,
yaml_config["accuracy_assessment_sampling_file"])
if "accuracy_assessment_sampling_type" in yaml_config:
AcATaMa.dockwidget.QCBox_SamplingType_AA.setCurrentIndex(yaml_config["accuracy_assessment_sampling_type"])
if "accuracy_assessment_dialog" in yaml_config and classification:
from AcATaMa.core.accuracy_assessment import AccuracyAssessment
accuracy_assessment = AccuracyAssessment(classification)
area_unit, success = QgsUnitTypes.stringToAreaUnit(yaml_config["accuracy_assessment_dialog"]["area_unit"])
if success:
accuracy_assessment.area_unit = area_unit
accuracy_assessment.z_score = yaml_config["accuracy_assessment_dialog"]["z_score"]
accuracy_assessment.csv_separator = yaml_config["accuracy_assessment_dialog"]["csv_separator"]
accuracy_assessment.csv_decimal = yaml_config["accuracy_assessment_dialog"]["csv_decimal"]
classification.accuracy_assessment = accuracy_assessment
# support load the old format end here
if "accuracy_assessment" in yaml_config and "sampling_file" in yaml_config["accuracy_assessment"]:
load_and_select_filepath_in(AcATaMa.dockwidget.QCBox_SamplingFile_AA,
yaml_config["accuracy_assessment"]["sampling_file"])
if "accuracy_assessment" in yaml_config and "sampling_type" in yaml_config["accuracy_assessment"]:
AcATaMa.dockwidget.QCBox_SamplingType_AA.setCurrentIndex(yaml_config["accuracy_assessment"]["sampling_type"])
if "accuracy_assessment" in yaml_config and "dialog" in yaml_config["accuracy_assessment"] and classification:
from AcATaMa.core.accuracy_assessment import AccuracyAssessment
accuracy_assessment = AccuracyAssessment(classification)
area_unit, success = QgsUnitTypes.stringToAreaUnit(yaml_config["accuracy_assessment"]["dialog"]["area_unit"])
if success:
accuracy_assessment.area_unit = area_unit
accuracy_assessment.z_score = yaml_config["accuracy_assessment"]["dialog"]["z_score"]
accuracy_assessment.csv_separator = yaml_config["accuracy_assessment"]["dialog"]["csv_separator"]
accuracy_assessment.csv_decimal = yaml_config["accuracy_assessment"]["dialog"]["csv_decimal"]
classification.accuracy_assessment = accuracy_assessment
# reload sampling file status in accuracy assessment
AcATaMa.dockwidget.set_sampling_file_accuracy_assessment()
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoints = self.parameterAsSource(parameters, self.START_POINTS,
context)
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
travelCost = self.parameterAsDouble(parameters, self.TRAVEL_COST,
context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
fields = QgsFields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(context.project().crs(), True, tolerance)
feedback.pushInfo(self.tr('Loading start points...'))
request = QgsFeatureRequest()
request.setFlags(request.flags()
^ QgsFeatureRequest.SubsetOfAttributes)
request.setDestinationCrs(network.sourceCrs())
features = startPoints.getFeatures(request)
total = 100.0 / startPoints.featureCount() if startPoints.featureCount(
) else 0
points = []
for current, f in enumerate(features):
if feedback.isCanceled():
break
points.append(f.geometry().asPoint())
feedback.setProgress(int(current * total))
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, points, feedback)
feedback.pushInfo(self.tr('Calculating service areas...'))
graph = builder.graph()
results = {}
(sinkPoints, pointsId) = self.parameterAsSink(parameters,
self.OUTPUT_POINTS,
context, fields,
QgsWkbTypes.MultiPoint,
network.sourceCrs())
(sinkPolygon,
polygonId) = self.parameterAsSink(parameters, self.OUTPUT_POLYGON,
context, fields,
QgsWkbTypes.Polygon,
network.sourceCrs())
if sinkPoints:
results[self.OUTPUT_POINTS] = pointsId
if sinkPolygon:
results[self.OUTPUT_POLYGON] = polygonId
vertices = []
upperBoundary = []
lowerBoundary = []
total = 100.0 / len(snappedPoints) if snappedPoints else 1
for i, p in enumerate(snappedPoints):
if feedback.isCanceled():
break
idxStart = graph.findVertex(snappedPoints[i])
origPoint = points[i].toString()
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
for j, v in enumerate(cost):
if v > travelCost and tree[j] != -1:
vertexId = graph.edge(tree[j]).outVertex()
if cost[vertexId] <= travelCost:
vertices.append(j)
for j in vertices:
upperBoundary.append(
graph.vertex(graph.edge(tree[j]).inVertex()).point())
lowerBoundary.append(
graph.vertex(graph.edge(tree[j]).outVertex()).point())
if sinkPoints:
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
feat.setGeometry(geomUpper)
feat['type'] = 'upper'
feat['start'] = origPoint
sinkPoints.addFeature(feat, QgsFeatureSink.FastInsert)
feat.setGeometry(geomLower)
feat['type'] = 'lower'
feat['start'] = origPoint
sinkPoints.addFeature(feat, QgsFeatureSink.FastInsert)
if sinkPolygon:
upperBoundary.append(origPoint)
lowerBoundary.append(origPoint)
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
geom = geomUpper.convexHull()
feat.setGeometry(geom)
feat['type'] = 'upper'
feat['start'] = origPoint
sinkPolygon.addFeature(feat, QgsFeatureSink.FastInsert)
geom = geomLower.convexHull()
feat.setGeometry(geom)
feat['type'] = 'lower'
feat['start'] = origPoint
sinkPolygon.addFeature(feat, QgsFeatureSink.FastInsert)
vertices[:] = []
upperBoundary[:] = []
lowerBoundary[:] = []
feedback.setProgress(int(i * total))
return results
def processAlgorithm(self, feedback):
layer = dataobjects.getLayerFromString(
self.getParameterValue(self.INPUT_VECTOR))
startPoints = dataobjects.getLayerFromString(
self.getParameterValue(self.START_POINTS))
strategy = self.getParameterValue(self.STRATEGY)
travelCost = self.getParameterValue(self.TRAVEL_COST)
directionFieldName = self.getParameterValue(self.DIRECTION_FIELD)
forwardValue = self.getParameterValue(self.VALUE_FORWARD)
backwardValue = self.getParameterValue(self.VALUE_BACKWARD)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
speedFieldName = self.getParameterValue(self.SPEED_FIELD)
defaultSpeed = self.getParameterValue(self.DEFAULT_SPEED)
tolerance = self.getParameterValue(self.TOLERANCE)
fields = QgsFields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
writerPoints = self.getOutputFromName(
self.OUTPUT_POINTS).getVectorWriter(fields, QgsWkbTypes.MultiPoint,
layer.crs())
writerPolygons = self.getOutputFromName(
self.OUTPUT_POLYGON).getVectorWriter(fields, QgsWkbTypes.Polygon,
layer.crs())
directionField = -1
if directionFieldName is not None:
directionField = layer.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName is not None:
speedField = layer.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(layer, directionField, forwardValue,
backwardValue, bothValue,
defaultDirection)
distUnit = iface.mapCanvas().mapSettings().destinationCrs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(
iface.mapCanvas().mapSettings().destinationCrs(), True, tolerance)
feedback.pushInfo(self.tr('Loading start points...'))
request = QgsFeatureRequest()
request.setFlags(request.flags()
^ QgsFeatureRequest.SubsetOfAttributes)
features = vector.features(startPoints, request)
points = []
for f in features:
points.append(f.geometry().asPoint())
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, points)
feedback.pushInfo(self.tr('Calculating service areas...'))
graph = builder.graph()
vertices = []
upperBoundary = []
lowerBoundary = []
total = 100.0 / len(snappedPoints)
for i, p in enumerate(snappedPoints):
idxStart = graph.findVertex(snappedPoints[i])
origPoint = points[i].toString()
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
for j, v in enumerate(cost):
if v > travelCost and tree[j] != -1:
vertexId = graph.edge(tree[j]).outVertex()
if cost[vertexId] <= travelCost:
vertices.append(j)
for j in vertices:
upperBoundary.append(
graph.vertex(graph.edge(tree[j]).inVertex()).point())
lowerBoundary.append(
graph.vertex(graph.edge(tree[j]).outVertex()).point())
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
feat.setGeometry(geomUpper)
feat['type'] = 'upper'
feat['start'] = origPoint
writerPoints.addFeature(feat)
feat.setGeometry(geomLower)
feat['type'] = 'lower'
feat['start'] = origPoint
writerPoints.addFeature(feat)
upperBoundary.append(origPoint)
lowerBoundary.append(origPoint)
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
geom = geomUpper.convexHull()
feat.setGeometry(geom)
feat['type'] = 'upper'
feat['start'] = origPoint
writerPolygons.addFeature(feat)
geom = geomLower.convexHull()
feat.setGeometry(geom)
feat['type'] = 'lower'
feat['start'] = origPoint
writerPolygons.addFeature(feat)
vertices[:] = []
upperBoundary[:] = []
lowerBoundary[:] = []
feedback.setProgress(int(i * total))
del writerPoints
del writerPolygons
def setUnits(self, units):
self.label.setText(QgsUnitTypes.toString(units))
self.warning_label.setVisible(units == QgsUnitTypes.DistanceDegrees)
QgsUnitTypes.DistanceYards, QgsUnitTypes.DistanceMeters)
elif units == 5: # Feet
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceFeet, QgsUnitTypes.DistanceMeters)
elif units == 6: # Inches
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceFeet, QgsUnitTypes.DistanceMeters) / 12.0
elif units == 7: # Nautical Miles
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceNauticalMiles, QgsUnitTypes.DistanceMeters)
return measureFactor
epsg4326 = QgsCoordinateReferenceSystem("EPSG:4326")
nmToMeters = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceNauticalMiles, QgsUnitTypes.DistanceMeters)
metersToFeet = QgsUnitTypes.fromUnitToUnitFactor(QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceFeet)
degToMeters = nmToMeters * 60
metersToDeg = 1 / degToMeters
# vector addition of two XY points
def addPoints(a, b):
return QgsPointXY(a.x() + b.x(), a.y() + b.y())
# vector difference of two XY points
def diffPoints(a, b):
return QgsPointXY(a.x() - b.x(), a.y() - b.y())
def testFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between units"""
expected = {
QgsUnitTypes.DistanceMeters: {
QgsUnitTypes.DistanceMeters: 1.0,
QgsUnitTypes.DistanceKilometers: 0.001,
QgsUnitTypes.DistanceFeet: 3.28083989501,
QgsUnitTypes.DistanceYards: 1.0936133,
QgsUnitTypes.DistanceMiles: 0.00062136931818182,
QgsUnitTypes.DistanceDegrees: 0.00000898315,
QgsUnitTypes.DistanceNauticalMiles: 0.000539957,
QgsUnitTypes.DistanceMillimeters: 1000.0,
QgsUnitTypes.DistanceCentimeters: 100.0
},
QgsUnitTypes.DistanceKilometers: {
QgsUnitTypes.DistanceMeters: 1000.0,
QgsUnitTypes.DistanceKilometers: 1.0,
QgsUnitTypes.DistanceFeet: 3280.8398950,
QgsUnitTypes.DistanceYards: 1093.6132983,
QgsUnitTypes.DistanceMiles: 0.62137121212119317271,
QgsUnitTypes.DistanceDegrees: 0.0089832,
QgsUnitTypes.DistanceNauticalMiles: 0.53995682073432482717,
QgsUnitTypes.DistanceMillimeters: 1000000.0,
QgsUnitTypes.DistanceCentimeters: 100000.0
},
QgsUnitTypes.DistanceFeet: {
QgsUnitTypes.DistanceMeters: 0.3048,
QgsUnitTypes.DistanceKilometers: 0.0003048,
QgsUnitTypes.DistanceFeet: 1.0,
QgsUnitTypes.DistanceYards: 0.3333333,
QgsUnitTypes.DistanceMiles: 0.00018939375,
QgsUnitTypes.DistanceDegrees: 2.73806498599629E-06,
QgsUnitTypes.DistanceNauticalMiles: 0.000164579,
QgsUnitTypes.DistanceMillimeters: 304.8,
QgsUnitTypes.DistanceCentimeters: 30.48
},
QgsUnitTypes.DistanceYards: {
QgsUnitTypes.DistanceMeters: 0.9144,
QgsUnitTypes.DistanceKilometers: 0.0009144,
QgsUnitTypes.DistanceFeet: 3.0,
QgsUnitTypes.DistanceYards: 1.0,
QgsUnitTypes.DistanceMiles: 0.000568182,
QgsUnitTypes.DistanceDegrees: 0.0000082,
QgsUnitTypes.DistanceNauticalMiles: 0.0004937366590756,
QgsUnitTypes.DistanceMillimeters: 914.4,
QgsUnitTypes.DistanceCentimeters: 91.44
},
QgsUnitTypes.DistanceDegrees: {
QgsUnitTypes.DistanceMeters: 111319.49079327358,
QgsUnitTypes.DistanceKilometers: 111.3194908,
QgsUnitTypes.DistanceFeet: 365221.4264871,
QgsUnitTypes.DistanceYards: 121740.4754957,
QgsUnitTypes.DistanceMiles: 69.1707247,
QgsUnitTypes.DistanceDegrees: 1.0,
QgsUnitTypes.DistanceNauticalMiles: 60.1077164,
QgsUnitTypes.DistanceMillimeters: 111319490.79327358,
QgsUnitTypes.DistanceCentimeters: 11131949.079327358
},
QgsUnitTypes.DistanceMiles: {
QgsUnitTypes.DistanceMeters: 1609.3440000,
QgsUnitTypes.DistanceKilometers: 1.6093440,
QgsUnitTypes.DistanceFeet: 5280.0000000,
QgsUnitTypes.DistanceYards: 1760.0000000,
QgsUnitTypes.DistanceMiles: 1.0,
QgsUnitTypes.DistanceDegrees: 0.0144570,
QgsUnitTypes.DistanceNauticalMiles: 0.8689762,
QgsUnitTypes.DistanceMillimeters: 1609344.0,
QgsUnitTypes.DistanceCentimeters: 160934.4
},
QgsUnitTypes.DistanceNauticalMiles: {
QgsUnitTypes.DistanceMeters: 1852.0,
QgsUnitTypes.DistanceKilometers: 1.8520000,
QgsUnitTypes.DistanceFeet: 6076.1154856,
QgsUnitTypes.DistanceYards: 2025.3718285,
QgsUnitTypes.DistanceMiles: 1.1507794,
QgsUnitTypes.DistanceDegrees: 0.0166367990650,
QgsUnitTypes.DistanceNauticalMiles: 1.0,
QgsUnitTypes.DistanceMillimeters: 1852000.0,
QgsUnitTypes.DistanceCentimeters: 185200.0
},
QgsUnitTypes.DistanceMillimeters: {
QgsUnitTypes.DistanceMeters: 0.001,
QgsUnitTypes.DistanceKilometers: 0.000001,
QgsUnitTypes.DistanceFeet: 0.00328083989501,
QgsUnitTypes.DistanceYards: 0.0010936133,
QgsUnitTypes.DistanceMiles: 0.00000062136931818182,
QgsUnitTypes.DistanceDegrees: 0.00000000898315,
QgsUnitTypes.DistanceNauticalMiles: 0.000000539957,
QgsUnitTypes.DistanceMillimeters: 1.0,
QgsUnitTypes.DistanceCentimeters: 0.1
},
QgsUnitTypes.DistanceCentimeters: {
QgsUnitTypes.DistanceMeters: 0.01,
QgsUnitTypes.DistanceKilometers: 0.00001,
QgsUnitTypes.DistanceFeet: 0.0328083989501,
QgsUnitTypes.DistanceYards: 0.010936133,
QgsUnitTypes.DistanceMiles: 0.0000062136931818182,
QgsUnitTypes.DistanceDegrees: 0.0000000898315,
QgsUnitTypes.DistanceNauticalMiles: 0.00000539957,
QgsUnitTypes.DistanceMillimeters: 10.0,
QgsUnitTypes.DistanceCentimeters: 1.0
},
QgsUnitTypes.DistanceUnknownUnit: {
QgsUnitTypes.DistanceMeters: 1.0,
QgsUnitTypes.DistanceKilometers: 1.0,
QgsUnitTypes.DistanceFeet: 1.0,
QgsUnitTypes.DistanceYards: 1.0,
QgsUnitTypes.DistanceMiles: 1.0,
QgsUnitTypes.DistanceDegrees: 1.0,
QgsUnitTypes.DistanceNauticalMiles: 1.0,
QgsUnitTypes.DistanceMillimeters: 1.0,
QgsUnitTypes.DistanceCentimeters: 1.0
},
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(
res,
expected_factor,
msg=
'got {:.7f}, expected {:.7f} when converting from {} to {}'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
# test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(
from_unit, QgsUnitTypes.DistanceUnknownUnit)
self.assertAlmostEqual(
res,
1.0,
msg=
'got {:.7f}, expected 1.0 when converting from {} to unknown units'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def testAreaFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between areal units"""
expected = {
QgsUnitTypes.AreaSquareMeters: {
QgsUnitTypes.AreaSquareMeters: 1.0,
QgsUnitTypes.AreaSquareKilometers: 1e-6,
QgsUnitTypes.AreaSquareFeet: 10.7639104,
QgsUnitTypes.AreaSquareYards: 1.19599,
QgsUnitTypes.AreaSquareMiles: 3.86102e-7,
QgsUnitTypes.AreaHectares: 0.0001,
QgsUnitTypes.AreaAcres: 0.000247105,
QgsUnitTypes.AreaSquareNauticalMiles: 2.91553e-7,
QgsUnitTypes.AreaSquareDegrees: 0.000000000080697,
QgsUnitTypes.AreaSquareMillimeters: 1e6,
QgsUnitTypes.AreaSquareCentimeters: 1e4,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareKilometers: {
QgsUnitTypes.AreaSquareMeters: 1e6,
QgsUnitTypes.AreaSquareKilometers: 1,
QgsUnitTypes.AreaSquareFeet: 10763910.4167097,
QgsUnitTypes.AreaSquareYards: 1195990.04630108,
QgsUnitTypes.AreaSquareMiles: 0.386102158,
QgsUnitTypes.AreaHectares: 100,
QgsUnitTypes.AreaAcres: 247.105381467,
QgsUnitTypes.AreaSquareNauticalMiles: 0.291553349598,
QgsUnitTypes.AreaSquareDegrees: 0.000080697034968,
QgsUnitTypes.AreaSquareMillimeters: 1e12,
QgsUnitTypes.AreaSquareCentimeters: 1e10,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareFeet: {
QgsUnitTypes.AreaSquareMeters: 0.092903,
QgsUnitTypes.AreaSquareKilometers: 9.2903e-8,
QgsUnitTypes.AreaSquareFeet: 1.0,
QgsUnitTypes.AreaSquareYards: 0.11111111111,
QgsUnitTypes.AreaSquareMiles: 3.58701e-8,
QgsUnitTypes.AreaHectares: 9.2903e-6,
QgsUnitTypes.AreaAcres: 2.29568e-5,
QgsUnitTypes.AreaSquareNauticalMiles: 2.70862e-8,
QgsUnitTypes.AreaSquareDegrees: 0.000000000007497,
QgsUnitTypes.AreaSquareMillimeters: 92903.04,
QgsUnitTypes.AreaSquareCentimeters: 929.0304,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareYards: {
QgsUnitTypes.AreaSquareMeters: 0.836127360,
QgsUnitTypes.AreaSquareKilometers: 8.36127e-7,
QgsUnitTypes.AreaSquareFeet: 9.0,
QgsUnitTypes.AreaSquareYards: 1.0,
QgsUnitTypes.AreaSquareMiles: 3.22831e-7,
QgsUnitTypes.AreaHectares: 8.3612736E-5,
QgsUnitTypes.AreaAcres: 0.00020661157,
QgsUnitTypes.AreaSquareNauticalMiles: 2.43776e-7,
QgsUnitTypes.AreaSquareDegrees: 0.000000000067473,
QgsUnitTypes.AreaSquareMillimeters: 836127.360,
QgsUnitTypes.AreaSquareCentimeters: 8361.27360,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareMiles: {
QgsUnitTypes.AreaSquareMeters: 2589988.110336,
QgsUnitTypes.AreaSquareKilometers: 2.589988110,
QgsUnitTypes.AreaSquareFeet: 27878400,
QgsUnitTypes.AreaSquareYards: 3097600,
QgsUnitTypes.AreaSquareMiles: 1.0,
QgsUnitTypes.AreaHectares: 258.998811,
QgsUnitTypes.AreaAcres: 640,
QgsUnitTypes.AreaSquareNauticalMiles: 0.75511970898,
QgsUnitTypes.AreaSquareDegrees: 0.000209004361107,
QgsUnitTypes.AreaSquareMillimeters: 2589988110336.0,
QgsUnitTypes.AreaSquareCentimeters: 25899881103.36,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaHectares: {
QgsUnitTypes.AreaSquareMeters: 10000,
QgsUnitTypes.AreaSquareKilometers: 0.01,
QgsUnitTypes.AreaSquareFeet: 107639.1041670972,
QgsUnitTypes.AreaSquareYards: 11959.9004630,
QgsUnitTypes.AreaSquareMiles: 0.00386102,
QgsUnitTypes.AreaHectares: 1.0,
QgsUnitTypes.AreaAcres: 2.471053814,
QgsUnitTypes.AreaSquareNauticalMiles: 0.00291553,
QgsUnitTypes.AreaSquareDegrees: 0.000000806970350,
QgsUnitTypes.AreaSquareMillimeters: 10000000000.0,
QgsUnitTypes.AreaSquareCentimeters: 100000000.0,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaAcres: {
QgsUnitTypes.AreaSquareMeters: 4046.8564224,
QgsUnitTypes.AreaSquareKilometers: 0.00404686,
QgsUnitTypes.AreaSquareFeet: 43560,
QgsUnitTypes.AreaSquareYards: 4840,
QgsUnitTypes.AreaSquareMiles: 0.0015625,
QgsUnitTypes.AreaHectares: 0.404685642,
QgsUnitTypes.AreaAcres: 1.0,
QgsUnitTypes.AreaSquareNauticalMiles: 0.00117987,
QgsUnitTypes.AreaSquareDegrees: 0.000000326569314,
QgsUnitTypes.AreaSquareMillimeters: 4046856422.4000005,
QgsUnitTypes.AreaSquareCentimeters: 40468564.224,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareNauticalMiles: {
QgsUnitTypes.AreaSquareMeters: 3429904,
QgsUnitTypes.AreaSquareKilometers: 3.4299040,
QgsUnitTypes.AreaSquareFeet: 36919179.39391434,
QgsUnitTypes.AreaSquareYards: 4102131.04376826,
QgsUnitTypes.AreaSquareMiles: 1.324293337,
QgsUnitTypes.AreaHectares: 342.9904000000,
QgsUnitTypes.AreaAcres: 847.54773631,
QgsUnitTypes.AreaSquareNauticalMiles: 1.0,
QgsUnitTypes.AreaSquareDegrees: 0.000276783083025,
QgsUnitTypes.AreaSquareMillimeters: 3429904000000.0,
QgsUnitTypes.AreaSquareCentimeters: 34299040000.0,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareDegrees: {
QgsUnitTypes.AreaSquareMeters: 12392029030.5,
QgsUnitTypes.AreaSquareKilometers: 12392.029030499,
QgsUnitTypes.AreaSquareFeet: 133386690365.5682220,
QgsUnitTypes.AreaSquareYards: 14820743373.9520263,
QgsUnitTypes.AreaSquareMiles: 4784.5891573967,
QgsUnitTypes.AreaHectares: 1239202.903050,
QgsUnitTypes.AreaAcres: 3062137.060733889,
QgsUnitTypes.AreaSquareNauticalMiles: 3612.93757215,
QgsUnitTypes.AreaSquareDegrees: 1.0,
QgsUnitTypes.AreaSquareMillimeters: 12392029030500000.0,
QgsUnitTypes.AreaSquareCentimeters: 123920290305000.0,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareMillimeters: {
QgsUnitTypes.AreaSquareMeters: 1e-6,
QgsUnitTypes.AreaSquareKilometers: 1e-12,
QgsUnitTypes.AreaSquareFeet: 0.000010763910417,
QgsUnitTypes.AreaSquareYards: 0.000001195990046,
QgsUnitTypes.AreaSquareMiles: 3.861021585424458e-13,
QgsUnitTypes.AreaHectares: 1e-10,
QgsUnitTypes.AreaAcres: 2.471053814671653e-10,
QgsUnitTypes.AreaSquareNauticalMiles: 2.9155334959812287e-13,
QgsUnitTypes.AreaSquareDegrees: 8.069703496810251e-17,
QgsUnitTypes.AreaSquareMillimeters: 1.0,
QgsUnitTypes.AreaSquareCentimeters: 0.01,
QgsUnitTypes.AreaUnknownUnit: 1.0
},
QgsUnitTypes.AreaSquareCentimeters: {
QgsUnitTypes.AreaSquareMeters: 1e-4,
QgsUnitTypes.AreaSquareKilometers: 1e-10,
QgsUnitTypes.AreaSquareFeet: 0.0010763910417,
QgsUnitTypes.AreaSquareYards: 0.0001195990046,
QgsUnitTypes.AreaSquareMiles: 3.861021585424458e-11,
QgsUnitTypes.AreaHectares: 1e-8,
QgsUnitTypes.AreaAcres: 2.471053814671653e-8,
QgsUnitTypes.AreaSquareNauticalMiles: 2.9155334959812287e-11,
QgsUnitTypes.AreaSquareDegrees: 8.069703496810251e-15,
QgsUnitTypes.AreaSquareMillimeters: 100,
QgsUnitTypes.AreaSquareCentimeters: 1.0,
QgsUnitTypes.AreaUnknownUnit: 1.0
}
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(
res,
expected_factor,
msg=
'got {:.15f}, expected {:.15f} when converting from {} to {}'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
# test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(
from_unit, QgsUnitTypes.AreaUnknownUnit)
self.assertAlmostEqual(
res,
1.0,
msg=
'got {:.7f}, expected 1.0 when converting from {} to unknown units'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def testAngleFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between angular units"""
expected = {
QgsUnitTypes.AngleDegrees: {
QgsUnitTypes.AngleDegrees: 1.0,
QgsUnitTypes.AngleRadians: 0.0174533,
QgsUnitTypes.AngleGon: 1.1111111,
QgsUnitTypes.AngleMinutesOfArc: 60,
QgsUnitTypes.AngleSecondsOfArc: 3600,
QgsUnitTypes.AngleTurn: 0.00277777777778
},
QgsUnitTypes.AngleRadians: {
QgsUnitTypes.AngleDegrees: 57.2957795,
QgsUnitTypes.AngleRadians: 1.0,
QgsUnitTypes.AngleGon: 63.6619772,
QgsUnitTypes.AngleMinutesOfArc: 3437.7467708,
QgsUnitTypes.AngleSecondsOfArc: 206264.8062471,
QgsUnitTypes.AngleTurn: 0.159154943092
},
QgsUnitTypes.AngleGon: {
QgsUnitTypes.AngleDegrees: 0.9000000,
QgsUnitTypes.AngleRadians: 0.015707968623450838802,
QgsUnitTypes.AngleGon: 1.0,
QgsUnitTypes.AngleMinutesOfArc: 54.0000000,
QgsUnitTypes.AngleSecondsOfArc: 3240.0000000,
QgsUnitTypes.AngleTurn: 0.0025
},
QgsUnitTypes.AngleMinutesOfArc: {
QgsUnitTypes.AngleDegrees: 0.016666672633390722247,
QgsUnitTypes.AngleRadians: 0.00029088831280398030638,
QgsUnitTypes.AngleGon: 0.018518525464057963154,
QgsUnitTypes.AngleMinutesOfArc: 1.0,
QgsUnitTypes.AngleSecondsOfArc: 60.0,
QgsUnitTypes.AngleTurn: 4.62962962962963e-05
},
QgsUnitTypes.AngleSecondsOfArc: {
QgsUnitTypes.AngleDegrees: 0.00027777787722304257169,
QgsUnitTypes.AngleRadians: 4.848138546730629518e-6,
QgsUnitTypes.AngleGon: 0.0003086420910674814405,
QgsUnitTypes.AngleMinutesOfArc: 0.016666672633325253783,
QgsUnitTypes.AngleSecondsOfArc: 1.0,
QgsUnitTypes.AngleTurn: 7.71604938271605e-07
},
QgsUnitTypes.AngleTurn: {
QgsUnitTypes.AngleDegrees: 360.0,
QgsUnitTypes.AngleRadians: 6.2831853071795,
QgsUnitTypes.AngleGon: 400.0,
QgsUnitTypes.AngleMinutesOfArc: 21600,
QgsUnitTypes.AngleSecondsOfArc: 1296000,
QgsUnitTypes.AngleTurn: 1
}
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(
res,
expected_factor,
msg=
'got {:.7f}, expected {:.7f} when converting from {} to {}'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
# test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(
from_unit, QgsUnitTypes.AngleUnknownUnit)
self.assertAlmostEqual(
res,
1.0,
msg=
'got {:.7f}, expected 1.0 when converting from {} to unknown units'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoints = self.parameterAsSource(parameters, self.START_POINTS,
context)
endPoint = self.parameterAsPoint(parameters, self.END_POINT, context,
network.sourceCrs())
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
fields = startPoints.fields()
fields.append(QgsField('start', QVariant.String, '', 254, 0))
fields.append(QgsField('end', QVariant.String, '', 254, 0))
fields.append(QgsField('cost', QVariant.Double, '', 20, 7))
feat = QgsFeature()
feat.setFields(fields)
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT,
context, fields,
QgsWkbTypes.LineString,
network.sourceCrs())
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
multiplier = 3600
director.addStrategy(strategy)
builder = QgsGraphBuilder(network.sourceCrs(), True, tolerance)
feedback.pushInfo(
QCoreApplication.translate('ShortestPathLayerToPoint',
'Loading start points…'))
request = QgsFeatureRequest()
request.setDestinationCrs(network.sourceCrs(),
context.transformContext())
features = startPoints.getFeatures(request)
total = 100.0 / startPoints.featureCount() if startPoints.featureCount(
) else 0
points = [endPoint]
source_attributes = {}
i = 1
for current, f in enumerate(features):
if feedback.isCanceled():
break
if not f.hasGeometry():
continue
for p in f.geometry().vertices():
points.append(QgsPointXY(p))
source_attributes[i] = f.attributes()
i += 1
feedback.setProgress(int(current * total))
feedback.pushInfo(
QCoreApplication.translate('ShortestPathLayerToPoint',
'Building graph…'))
snappedPoints = director.makeGraph(builder, points, feedback)
feedback.pushInfo(
QCoreApplication.translate('ShortestPathLayerToPoint',
'Calculating shortest paths…'))
graph = builder.graph()
idxEnd = graph.findVertex(snappedPoints[0])
nPoints = len(snappedPoints)
total = 100.0 / nPoints if nPoints else 1
for i in range(1, nPoints):
if feedback.isCanceled():
break
idxStart = graph.findVertex(snappedPoints[i])
tree, costs = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
if tree[idxEnd] == -1:
msg = self.tr(
'There is no route from start point ({}) to end point ({}).'
.format(points[i].toString(), endPoint.toString()))
feedback.reportError(msg)
# add feature with no geometry
feat.clearGeometry()
attrs = source_attributes[i]
attrs.append(points[i].toString())
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
continue
route = [graph.vertex(idxEnd).point()]
cost = costs[idxEnd]
current = idxEnd
while current != idxStart:
current = graph.edge(tree[current]).fromVertex()
route.append(graph.vertex(current).point())
route.reverse()
geom = QgsGeometry.fromPolylineXY(route)
feat.setGeometry(geom)
attrs = source_attributes[i]
attrs.extend(
[points[i].toString(),
endPoint.toString(), cost / multiplier])
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
feedback.setProgress(int(i * total))
return {self.OUTPUT: dest_id}
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoints = self.parameterAsSource(parameters, self.START_POINTS, context)
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
travelCost = self.parameterAsDouble(parameters, self.TRAVEL_COST, context)
directionFieldName = self.parameterAsString(parameters, self.DIRECTION_FIELD, context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD, context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD, context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH, context)
defaultDirection = self.parameterAsEnum(parameters, self.DEFAULT_DIRECTION, context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD, context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED, context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
fields = startPoints.fields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network,
directionField,
forwardValue,
backwardValue,
bothValue,
defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField,
defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(network.sourceCrs(),
True,
tolerance)
feedback.pushInfo(QCoreApplication.translate('ServiceAreaFromLayer', 'Loading start points…'))
request = QgsFeatureRequest()
request.setDestinationCrs(network.sourceCrs(), context.transformContext())
features = startPoints.getFeatures(request)
total = 100.0 / startPoints.featureCount() if startPoints.featureCount() else 0
points = []
source_attributes = {}
i = 0
for current, f in enumerate(features):
if feedback.isCanceled():
break
if not f.hasGeometry():
continue
for p in f.geometry().vertices():
points.append(QgsPointXY(p))
source_attributes[i] = f.attributes()
i += 1
feedback.setProgress(int(current * total))
feedback.pushInfo(QCoreApplication.translate('ServiceAreaFromLayer', 'Building graph…'))
snappedPoints = director.makeGraph(builder, points, feedback)
feedback.pushInfo(QCoreApplication.translate('ServiceAreaFromLayer', 'Calculating service areas…'))
graph = builder.graph()
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
fields, QgsWkbTypes.MultiPoint, network.sourceCrs())
vertices = []
upperBoundary = []
lowerBoundary = []
total = 100.0 / len(snappedPoints) if snappedPoints else 1
for i, p in enumerate(snappedPoints):
if feedback.isCanceled():
break
idxStart = graph.findVertex(snappedPoints[i])
origPoint = points[i].toString()
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
for j, v in enumerate(cost):
if v > travelCost and tree[j] != -1:
vertexId = graph.edge(tree[j]).fromVertex()
if cost[vertexId] <= travelCost:
vertices.append(j)
for j in vertices:
upperBoundary.append(graph.vertex(graph.edge(tree[j]).toVertex()).point())
lowerBoundary.append(graph.vertex(graph.edge(tree[j]).fromVertex()).point())
geomUpper = QgsGeometry.fromMultiPointXY(upperBoundary)
geomLower = QgsGeometry.fromMultiPointXY(lowerBoundary)
feat.setGeometry(geomUpper)
attrs = source_attributes[i]
attrs.extend(['upper', origPoint])
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
feat.setGeometry(geomLower)
attrs[-2] = 'lower'
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
vertices[:] = []
upperBoundary[:] = []
lowerBoundary[:] = []
feedback.setProgress(int(i * total))
return {self.OUTPUT: dest_id}
def testLengthMeasureAndUnits(self):
"""Test a variety of length measurements in different CRS and ellipsoid modes, to check that the
calculated lengths and units are always consistent
"""
da = QgsDistanceArea()
da.setSourceCrs(3452)
da.setEllipsoidalMode(False)
da.setEllipsoid("NONE")
daCRS = QgsCoordinateReferenceSystem()
daCRS = da.sourceCrs()
# We check both the measured length AND the units, in case the logic regarding
# ellipsoids and units changes in future
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance,
QgsUnitTypes.toString(units))))
assert ((abs(distance - 2.23606797) < 0.00000001
and units == QgsUnitTypes.DistanceDegrees)
or (abs(distance - 248.52) < 0.01
and units == QgsUnitTypes.DistanceMeters))
da.setEllipsoid("WGS84")
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance,
QgsUnitTypes.toString(units))))
assert ((abs(distance - 2.23606797) < 0.00000001
and units == QgsUnitTypes.DistanceDegrees)
or (abs(distance - 248.52) < 0.01
and units == QgsUnitTypes.DistanceMeters))
da.setEllipsoidalMode(True)
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance,
QgsUnitTypes.toString(units))))
# should always be in Meters
self.assertAlmostEqual(distance, 247555.57, delta=0.01)
self.assertEqual(units, QgsUnitTypes.DistanceMeters)
# test converting the resultant length
distance = da.convertLengthMeasurement(
distance, QgsUnitTypes.DistanceNauticalMiles)
self.assertAlmostEqual(distance, 133.669, delta=0.01)
# now try with a source CRS which is in feet
da.setSourceCrs(27469)
da.setEllipsoidalMode(False)
# measurement should be in feet
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance,
QgsUnitTypes.toString(units))))
self.assertAlmostEqual(distance, 2.23606797, delta=0.000001)
self.assertEqual(units, QgsUnitTypes.DistanceFeet)
# test converting the resultant length
distance = da.convertLengthMeasurement(distance,
QgsUnitTypes.DistanceMeters)
self.assertAlmostEqual(distance, 0.6815, delta=0.001)
da.setEllipsoidalMode(True)
# now should be in Meters again
distance = da.measureLine(QgsPoint(1, 1), QgsPoint(2, 3))
units = da.lengthUnits()
print(("measured {} in {}".format(distance,
QgsUnitTypes.toString(units))))
self.assertAlmostEqual(distance, 0.67953772, delta=0.000001)
self.assertEqual(units, QgsUnitTypes.DistanceMeters)
# test converting the resultant length
distance = da.convertLengthMeasurement(distance,
QgsUnitTypes.DistanceFeet)
self.assertAlmostEqual(distance, 2.2294, delta=0.001)
def testAreaMeasureAndUnits(self):
"""Test a variety of area measurements in different CRS and ellipsoid modes, to check that the
calculated areas and units are always consistent
"""
da = QgsDistanceArea()
da.setSourceCrs(3452)
da.setEllipsoidalMode(False)
da.setEllipsoid("NONE")
daCRS = QgsCoordinateReferenceSystem()
daCRS = da.sourceCrs()
polygon = QgsGeometry.fromPolygon([[
QgsPoint(0, 0),
QgsPoint(1, 0),
QgsPoint(1, 1),
QgsPoint(2, 1),
QgsPoint(2, 2),
QgsPoint(0, 2),
QgsPoint(0, 0),
]])
# We check both the measured area AND the units, in case the logic regarding
# ellipsoids and units changes in future
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
assert ((abs(area - 3.0) < 0.00000001
and units == QgsUnitTypes.AreaSquareDegrees)
or (abs(area - 37176087091.5) < 0.1
and units == QgsUnitTypes.AreaSquareMeters))
da.setEllipsoid("WGS84")
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
assert ((abs(area - 3.0) < 0.00000001
and units == QgsUnitTypes.AreaSquareDegrees)
or (abs(area - 37176087091.5) < 0.1
and units == QgsUnitTypes.AreaSquareMeters))
da.setEllipsoidalMode(True)
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
# should always be in Meters Squared
self.assertAlmostEqual(area, 37416879192.9, delta=0.1)
self.assertEqual(units, QgsUnitTypes.AreaSquareMeters)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareMiles)
self.assertAlmostEqual(area, 14446.7378, delta=0.001)
# now try with a source CRS which is in feet
polygon = QgsGeometry.fromPolygon([[
QgsPoint(1850000, 4423000),
QgsPoint(1851000, 4423000),
QgsPoint(1851000, 4424000),
QgsPoint(1852000, 4424000),
QgsPoint(1852000, 4425000),
QgsPoint(1851000, 4425000),
QgsPoint(1850000, 4423000)
]])
da.setSourceCrs(27469)
da.setEllipsoidalMode(False)
# measurement should be in square feet
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(area, 2000000, delta=0.001)
self.assertEqual(units, QgsUnitTypes.AreaSquareFeet)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareYards)
self.assertAlmostEqual(area, 222222.2222, delta=0.001)
da.setEllipsoidalMode(True)
# now should be in Square Meters again
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(area, 184149.37, delta=1.0)
self.assertEqual(units, QgsUnitTypes.AreaSquareMeters)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareYards)
self.assertAlmostEqual(area, 220240.8172549, delta=1.0)
def processAlgorithm(self, feedback):
layer = dataobjects.getLayerFromString(
self.getParameterValue(self.INPUT_VECTOR))
startPoint = self.getParameterValue(self.START_POINT)
endPoint = self.getParameterValue(self.END_POINT)
strategy = self.getParameterValue(self.STRATEGY)
directionFieldName = self.getParameterValue(self.DIRECTION_FIELD)
forwardValue = self.getParameterValue(self.VALUE_FORWARD)
backwardValue = self.getParameterValue(self.VALUE_BACKWARD)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
speedFieldName = self.getParameterValue(self.SPEED_FIELD)
defaultSpeed = self.getParameterValue(self.DEFAULT_SPEED)
tolerance = self.getParameterValue(self.TOLERANCE)
fields = QgsFields()
fields.append(QgsField('start', QVariant.String, '', 254, 0))
fields.append(QgsField('end', QVariant.String, '', 254, 0))
fields.append(QgsField('cost', QVariant.Double, '', 20, 7))
writer = self.getOutputFromName(self.OUTPUT_LAYER).getVectorWriter(
fields.toList(), QgsWkbTypes.LineString, layer.crs())
tmp = startPoint.split(',')
startPoint = QgsPoint(float(tmp[0]), float(tmp[1]))
tmp = endPoint.split(',')
endPoint = QgsPoint(float(tmp[0]), float(tmp[1]))
directionField = -1
if directionFieldName is not None:
directionField = layer.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName is not None:
speedField = layer.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(layer, directionField, forwardValue,
backwardValue, bothValue,
defaultDirection)
distUnit = iface.mapCanvas().mapSettings().destinationCrs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
multiplier = 3600
director.addStrategy(strategy)
builder = QgsGraphBuilder(
iface.mapCanvas().mapSettings().destinationCrs(), True, tolerance)
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, [startPoint, endPoint])
feedback.pushInfo(self.tr('Calculating shortest path...'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
idxEnd = graph.findVertex(snappedPoints[1])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
if tree[idxEnd] == -1:
raise GeoAlgorithmExecutionException(
self.tr('There is no route from start point to end point.'))
route = []
cost = 0.0
current = idxEnd
while current != idxStart:
cost += graph.edge(tree[current]).cost(0)
route.append(
graph.vertex(graph.edge(tree[current]).inVertex()).point())
current = graph.edge(tree[current]).outVertex()
route.append(snappedPoints[0])
route.reverse()
self.setOutputValue(self.TRAVEL_COST, cost / multiplier)
feedback.pushInfo(self.tr('Writing results...'))
geom = QgsGeometry.fromPolyline(route)
feat = QgsFeature()
feat.setFields(fields)
feat['start'] = startPoint.toString()
feat['end'] = endPoint.toString()
feat['cost'] = cost / multiplier
feat.setGeometry(geom)
writer.addFeature(feat)
del writer
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoint = self.parameterAsPoint(parameters, self.START_POINT,
context, network.sourceCrs())
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
travelCost = self.parameterAsDouble(parameters, self.TRAVEL_COST,
context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(network.sourceCrs(), True, tolerance)
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, [startPoint], feedback)
feedback.pushInfo(self.tr('Calculating service area...'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
vertices = []
for i, v in enumerate(cost):
if v > travelCost and tree[i] != -1:
vertexId = graph.edge(tree[i]).fromVertex()
if cost[vertexId] <= travelCost:
vertices.append(i)
upperBoundary = []
lowerBoundary = []
for i in vertices:
upperBoundary.append(
graph.vertex(graph.edge(tree[i]).toVertex()).point())
lowerBoundary.append(
graph.vertex(graph.edge(tree[i]).fromVertex()).point())
feedback.pushInfo(self.tr('Writing results...'))
fields = QgsFields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
geomUpper = QgsGeometry.fromMultiPointXY(upperBoundary)
geomLower = QgsGeometry.fromMultiPointXY(lowerBoundary)
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT,
context, fields,
QgsWkbTypes.MultiPoint,
network.sourceCrs())
feat.setGeometry(geomUpper)
feat['type'] = 'upper'
feat['start'] = startPoint.toString()
sink.addFeature(feat, QgsFeatureSink.FastInsert)
feat.setGeometry(geomLower)
feat['type'] = 'lower'
feat['start'] = startPoint.toString()
sink.addFeature(feat, QgsFeatureSink.FastInsert)
upperBoundary.append(startPoint)
lowerBoundary.append(startPoint)
geomUpper = QgsGeometry.fromMultiPointXY(upperBoundary)
geomLower = QgsGeometry.fromMultiPointXY(lowerBoundary)
return {self.OUTPUT: dest_id}
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
if network is None:
raise QgsProcessingException(
self.invalidSourceError(parameters, self.INPUT))
startPoint = self.parameterAsPoint(parameters, self.START_POINT,
context, network.sourceCrs())
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
travelCost = self.parameterAsDouble(parameters, self.TRAVEL_COST,
context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
include_bounds = True # default to true to maintain 3.0 API
if self.INCLUDE_BOUNDS in parameters:
include_bounds = self.parameterAsBoolean(parameters,
self.INCLUDE_BOUNDS,
context)
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(network.sourceCrs(), True, tolerance)
feedback.pushInfo(
QCoreApplication.translate('ServiceAreaFromPoint',
'Building graph…'))
snappedPoints = director.makeGraph(builder, [startPoint], feedback)
feedback.pushInfo(
QCoreApplication.translate('ServiceAreaFromPoint',
'Calculating service area…'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
vertices = set()
points = []
lines = []
for vertex, start_vertex_cost in enumerate(cost):
inbound_edge_index = tree[vertex]
if inbound_edge_index == -1 and vertex != idxStart:
# unreachable vertex
continue
if start_vertex_cost > travelCost:
# vertex is too expensive, discard
continue
vertices.add(vertex)
start_point = graph.vertex(vertex).point()
# find all edges coming from this vertex
for edge_id in graph.vertex(vertex).outgoingEdges():
edge = graph.edge(edge_id)
end_vertex_cost = start_vertex_cost + edge.cost(0)
end_point = graph.vertex(edge.toVertex()).point()
if end_vertex_cost <= travelCost:
# end vertex is cheap enough to include
vertices.add(edge.toVertex())
lines.append([start_point, end_point])
else:
# travelCost sits somewhere on this edge, interpolate position
interpolated_end_point = QgsGeometryUtils.interpolatePointOnLineByValue(
start_point.x(), start_point.y(), start_vertex_cost,
end_point.x(), end_point.y(), end_vertex_cost,
travelCost)
points.append(interpolated_end_point)
lines.append([start_point, interpolated_end_point])
for i in vertices:
points.append(graph.vertex(i).point())
feedback.pushInfo(
QCoreApplication.translate('ServiceAreaFromPoint',
'Writing results…'))
fields = QgsFields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
(point_sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT,
context, fields,
QgsWkbTypes.MultiPoint,
network.sourceCrs())
results = {}
if point_sink is not None:
results[self.OUTPUT] = dest_id
geomPoints = QgsGeometry.fromMultiPointXY(points)
feat.setGeometry(geomPoints)
feat['type'] = 'within'
feat['start'] = startPoint.toString()
point_sink.addFeature(feat, QgsFeatureSink.FastInsert)
if include_bounds:
upperBoundary = []
lowerBoundary = []
vertices = []
for i, v in enumerate(cost):
if v > travelCost and tree[i] != -1:
vertexId = graph.edge(tree[i]).fromVertex()
if cost[vertexId] <= travelCost:
vertices.append(i)
for i in vertices:
upperBoundary.append(
graph.vertex(graph.edge(tree[i]).toVertex()).point())
lowerBoundary.append(
graph.vertex(graph.edge(tree[i]).fromVertex()).point())
geomUpper = QgsGeometry.fromMultiPointXY(upperBoundary)
geomLower = QgsGeometry.fromMultiPointXY(lowerBoundary)
feat.setGeometry(geomUpper)
feat['type'] = 'upper'
feat['start'] = startPoint.toString()
point_sink.addFeature(feat, QgsFeatureSink.FastInsert)
feat.setGeometry(geomLower)
feat['type'] = 'lower'
feat['start'] = startPoint.toString()
point_sink.addFeature(feat, QgsFeatureSink.FastInsert)
(line_sink,
line_dest_id) = self.parameterAsSink(parameters, self.OUTPUT_LINES,
context, fields,
QgsWkbTypes.MultiLineString,
network.sourceCrs())
if line_sink is not None:
results[self.OUTPUT_LINES] = line_dest_id
geom_lines = QgsGeometry.fromMultiPolylineXY(lines)
feat.setGeometry(geom_lines)
feat['type'] = 'lines'
feat['start'] = startPoint.toString()
line_sink.addFeature(feat, QgsFeatureSink.FastInsert)
return results
def points_along_line(layerout,
startpoint,
endpoint,
distance,
label,
layer,
selected_only=True,
force=False,
fo_fila=False,
divide=0,
decimal=2):
"""Adding Points along the line
"""
crs = layer.crs().authid()
# TODO check for virtual or shapelayer and set virt_layer according to it
shape = False
if shape:
# define fields for feature attributes. A list of QgsField objects is needed
fields = [
QgsField("first", QVariant.Int),
QgsField("second", QVariant.String)
]
# create an instance of vector file writer, which will create the vector file.
# Arguments:
# 1. path to new file (will fail if exists already)
# 2. encoding of the attributes
# 3. field map
# 4. geometry type - from WKBTYPE enum
# 5. layer's spatial reference (instance of
# QgsCoordinateReferenceSystem) - optional
# 6. driver name for the output file
writer = QgsVectorFileWriter("my_shapes.shp", "CP1250", fields,
Qgis.WKBPoint, crs, "ESRI Shapefile")
if writer.hasError() != QgsVectorFileWriter.NoError:
# fix_print_with_import
print("Error when creating shapefile: ", writer.hasError())
# add a feature
fet = QgsFeature()
fet.setGeometry(QgsGeometry.fromPoint(QgsPoint(10, 10)))
fet.setAttributes([1, "text"])
writer.addFeature(fet)
# delete the writer to flush features to disk (optional)
del writer
layer_type = "Shapefile" # TODO Add Shapefile functionality here
else:
layer_type = "memory"
virt_layer = QgsVectorLayer("Point?crs=%s" % crs, layerout, layer_type)
provider = virt_layer.dataProvider()
virt_layer.startEditing() # actually writes attributes
units = layer.crs().mapUnits()
unitname = QgsUnitTypes.toString(units)
provider.addAttributes([
QgsField("fid", QVariant.Int),
QgsField("cng" + unitname, QVariant.Double)
])
def get_features():
"""Getting the features
"""
if selected_only:
return layer.selectedFeatures()
else:
return layer.getFeatures()
# Loop through all (selected) features
for feature in get_features():
geom = feature.geometry()
# Add feature ID of selected feature
fid = feature.id()
if not geom:
QgsMessageLog.logMessage("No geometry", "QChainage")
continue
features = create_points_at(startpoint, endpoint, distance, geom, fid,
force, fo_fila, divide)
provider.addFeatures(features)
virt_layer.updateExtents()
proj = QgsProject.instance()
proj.addMapLayers([virt_layer])
virt_layer.commitChanges()
virt_layer.reload()
# generic labeling properties
if label:
virt_layer.setCustomProperty("labeling", "pal")
virt_layer.setCustomProperty("labeling/enabled", "true")
virt_layer.setCustomProperty("labeling/fieldName", "cng")
virt_layer.setCustomProperty("labeling/fontSize", "10")
virt_layer.setCustomProperty("labeling/multiLineLabels", "true")
virt_layer.setCustomProperty("labeling/formatNumbers", "true")
virt_layer.setCustomProperty("labeling/decimals", decimal)
virt_layer.setCustomProperty("labeling/Size", "5")
# symbol = QgsMarkerSymbol.createSimple({"name": "capital"})
# virt_layer.setRenderer(QgsSingleSymbolRenderer(symbol))
virt_layer.triggerRepaint()
return
def processAlgorithm(self, parameters, context, feedback):
layer = QgsProcessingUtils.mapLayerFromString(
self.getParameterValue(self.INPUT_VECTOR), context)
startPoint = self.getParameterValue(self.START_POINT)
strategy = self.getParameterValue(self.STRATEGY)
travelCost = self.getParameterValue(self.TRAVEL_COST)
directionFieldName = self.getParameterValue(self.DIRECTION_FIELD)
forwardValue = self.getParameterValue(self.VALUE_FORWARD)
backwardValue = self.getParameterValue(self.VALUE_BACKWARD)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
speedFieldName = self.getParameterValue(self.SPEED_FIELD)
defaultSpeed = self.getParameterValue(self.DEFAULT_SPEED)
tolerance = self.getParameterValue(self.TOLERANCE)
tmp = startPoint.split(',')
startPoint = QgsPointXY(float(tmp[0]), float(tmp[1]))
directionField = -1
if directionFieldName is not None:
directionField = layer.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName is not None:
speedField = layer.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(layer, directionField, forwardValue,
backwardValue, bothValue,
defaultDirection)
distUnit = iface.mapCanvas().mapSettings().destinationCrs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
director.addStrategy(strategy)
builder = QgsGraphBuilder(
iface.mapCanvas().mapSettings().destinationCrs(), True, tolerance)
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, [startPoint])
feedback.pushInfo(self.tr('Calculating service area...'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
vertices = []
for i, v in enumerate(cost):
if v > travelCost and tree[i] != -1:
vertexId = graph.edge(tree[i]).outVertex()
if cost[vertexId] <= travelCost:
vertices.append(i)
upperBoundary = []
lowerBoundary = []
for i in vertices:
upperBoundary.append(
graph.vertex(graph.edge(tree[i]).inVertex()).point())
lowerBoundary.append(
graph.vertex(graph.edge(tree[i]).outVertex()).point())
feedback.pushInfo(self.tr('Writing results...'))
fields = QgsFields()
fields.append(QgsField('type', QVariant.String, '', 254, 0))
fields.append(QgsField('start', QVariant.String, '', 254, 0))
feat = QgsFeature()
feat.setFields(fields)
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
writer = self.getOutputFromName(self.OUTPUT_POINTS).getVectorWriter(
fields, QgsWkbTypes.MultiPoint, layer.crs(), context)
feat.setGeometry(geomUpper)
feat['type'] = 'upper'
feat['start'] = startPoint.toString()
writer.addFeature(feat)
feat.setGeometry(geomLower)
feat['type'] = 'lower'
feat['start'] = startPoint.toString()
writer.addFeature(feat)
del writer
upperBoundary.append(startPoint)
lowerBoundary.append(startPoint)
geomUpper = QgsGeometry.fromMultiPoint(upperBoundary)
geomLower = QgsGeometry.fromMultiPoint(lowerBoundary)
writer = self.getOutputFromName(self.OUTPUT_POLYGON).getVectorWriter(
fields, QgsWkbTypes.Polygon, layer.crs(), context)
geom = geomUpper.convexHull()
feat.setGeometry(geom)
feat['type'] = 'upper'
feat['start'] = startPoint.toString()
writer.addFeature(feat)
geom = geomLower.convexHull()
feat.setGeometry(geom)
feat['type'] = 'lower'
feat['start'] = startPoint.toString()
writer.addFeature(feat)
del writer
def testAngleFromUnitToUnitFactor(self):
"""Test calculation of conversion factor between angular units"""
expected = {
QgsUnitTypes.AngleDegrees: {
QgsUnitTypes.AngleDegrees: 1.0,
QgsUnitTypes.AngleRadians: 0.0174533,
QgsUnitTypes.AngleGon: 1.1111111,
QgsUnitTypes.AngleMinutesOfArc: 60,
QgsUnitTypes.AngleSecondsOfArc: 3600,
QgsUnitTypes.AngleTurn: 0.00277777777778,
QgsUnitTypes.AngleMilliradiansSI: 17.453292519943297,
QgsUnitTypes.AngleMilNATO: 17.77777777777778
},
QgsUnitTypes.AngleRadians: {
QgsUnitTypes.AngleDegrees: 57.2957795,
QgsUnitTypes.AngleRadians: 1.0,
QgsUnitTypes.AngleGon: 63.6619772,
QgsUnitTypes.AngleMinutesOfArc: 3437.7467708,
QgsUnitTypes.AngleSecondsOfArc: 206264.8062471,
QgsUnitTypes.AngleTurn: 0.159154943092,
QgsUnitTypes.AngleMilliradiansSI: 1000.0,
QgsUnitTypes.AngleMilNATO: 1018.5916357881301
},
QgsUnitTypes.AngleGon: {
QgsUnitTypes.AngleDegrees: 0.9000000,
QgsUnitTypes.AngleRadians: 0.015707968623450838802,
QgsUnitTypes.AngleGon: 1.0,
QgsUnitTypes.AngleMinutesOfArc: 54.0000000,
QgsUnitTypes.AngleSecondsOfArc: 3240.0000000,
QgsUnitTypes.AngleTurn: 0.0025,
QgsUnitTypes.AngleMilliradiansSI: 15.707963267948967,
QgsUnitTypes.AngleMilNATO: 16
},
QgsUnitTypes.AngleMinutesOfArc: {
QgsUnitTypes.AngleDegrees: 0.016666672633390722247,
QgsUnitTypes.AngleRadians: 0.00029088831280398030638,
QgsUnitTypes.AngleGon: 0.018518525464057963154,
QgsUnitTypes.AngleMinutesOfArc: 1.0,
QgsUnitTypes.AngleSecondsOfArc: 60.0,
QgsUnitTypes.AngleTurn: 4.62962962962963e-05,
QgsUnitTypes.AngleMilliradiansSI: 0.29088820866572157,
QgsUnitTypes.AngleMilNATO: 0.29629629629629634
},
QgsUnitTypes.AngleSecondsOfArc: {
QgsUnitTypes.AngleDegrees: 0.00027777787722304257169,
QgsUnitTypes.AngleRadians: 4.848138546730629518e-6,
QgsUnitTypes.AngleGon: 0.0003086420910674814405,
QgsUnitTypes.AngleMinutesOfArc: 0.016666672633325253783,
QgsUnitTypes.AngleSecondsOfArc: 1.0,
QgsUnitTypes.AngleTurn: 7.71604938271605e-07,
QgsUnitTypes.AngleMilliradiansSI: 0.0048481482527009582897,
QgsUnitTypes.AngleMilNATO: 0.0049382716049382715
},
QgsUnitTypes.AngleTurn: {
QgsUnitTypes.AngleDegrees: 360.0,
QgsUnitTypes.AngleRadians: 6.2831853071795,
QgsUnitTypes.AngleGon: 400.0,
QgsUnitTypes.AngleMinutesOfArc: 21600,
QgsUnitTypes.AngleSecondsOfArc: 1296000,
QgsUnitTypes.AngleTurn: 1,
QgsUnitTypes.AngleMilliradiansSI: 6283.185307179586,
QgsUnitTypes.AngleMilNATO: 6400
},
QgsUnitTypes.AngleMilliradiansSI: {
QgsUnitTypes.AngleDegrees: 0.057295779513082325,
QgsUnitTypes.AngleRadians: 0.001,
QgsUnitTypes.AngleGon: 0.06366197723675814,
QgsUnitTypes.AngleMinutesOfArc: 3.4377467707849396,
QgsUnitTypes.AngleSecondsOfArc: 206.26480624709637,
QgsUnitTypes.AngleTurn: 0.0015707963267948967,
QgsUnitTypes.AngleMilliradiansSI: 1.0,
QgsUnitTypes.AngleMilNATO: 1.0185916357881302
},
QgsUnitTypes.AngleMilNATO: {
QgsUnitTypes.AngleDegrees: 0.05625,
QgsUnitTypes.AngleRadians: 0.0009817477042468104,
QgsUnitTypes.AngleGon: 0.0625,
QgsUnitTypes.AngleMinutesOfArc: 3.375,
QgsUnitTypes.AngleSecondsOfArc: 202.5,
QgsUnitTypes.AngleTurn: 0.000015625,
QgsUnitTypes.AngleMilliradiansSI: 0.9817477042468102,
QgsUnitTypes.AngleMilNATO: 1.0
}
}
for from_unit in list(expected.keys()):
for to_unit in list(expected[from_unit].keys()):
expected_factor = expected[from_unit][to_unit]
res = QgsUnitTypes.fromUnitToUnitFactor(from_unit, to_unit)
self.assertAlmostEqual(
res,
expected_factor,
msg=
'got {:.7f}, expected {:.7f} when converting from {} to {}'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit),
QgsUnitTypes.toString(to_unit)))
# test conversion to unknown units
res = QgsUnitTypes.fromUnitToUnitFactor(
from_unit, QgsUnitTypes.AngleUnknownUnit)
self.assertAlmostEqual(
res,
1.0,
msg=
'got {:.7f}, expected 1.0 when converting from {} to unknown units'
.format(res, expected_factor,
QgsUnitTypes.toString(from_unit)))
def run(self):
"""Run method that performs all the real work"""
# Create the dialog with elements (after translation) and keep reference
# Only create GUI ONCE in callback, so that it will only load when the plugin is started
if self.first_start == True:
self.first_start = False
self.dlg = flowTraceDialog()
# get current selected layer
clayer = self.iface.mapCanvas().currentLayer()
# set layer name in dialog
self.dlg.labelLayer.setText(clayer.name())
# set number of selected features in dialog
self.dlg.labelNumFeatures.setText(str(len(clayer.selectedFeatures())))
# print(self.iface.mapCanvas().mapUnits())
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# get direct from dialog
direction = self.dlg.downstream_radio_button.isChecked()
final_list = []
#add tolerance value
# setup total length
totallength = 0.0
# distance = 0
#setup distance
distance = QgsDistanceArea()
# the unit of measure will be set to the same as the layer
# maybe it would be better to set it to the map CRS
distance.setSourceCrs(clayer.sourceCrs(),
QgsProject.instance().transformContext())
if result:
#setup final selection list
#setup temporary selection list
selection_list = []
#add tolerance value
tolerance = 1
#get current layer
clayer = self.iface.mapCanvas().currentLayer()
# print (clayer.name())
if clayer is None:
return
#get provider
provider = clayer.dataProvider()
#get selected features
features = clayer.selectedFeatures()
# get crs for tolerance setting
crs = self.iface.activeLayer().crs().authid()
# print (crs)
if crs == 'EPSG:4269':
rec = .0001
tolerance = .0001
else:
#rec = .1
rec = self.dlg.SpinBoxTolerance.value()
#iterate thru features to add to lists
for feature in features:
# add selected features to final list
final_list.append(feature.id())
# add selected features to selection list for while loop
selection_list.append(feature.id())
#get feature geometry
geom = feature.geometry()
totallength = totallength + distance.measureLength(geom)
# print (QgsDistanceArea.lengthUnits)
# https://qgis.org/api/classQgsWkbTypes.html
if geom.type() != 1:
print("Geometry not allowed")
QMessageBox.information(
None, "Flow Trace",
"Geometry not allowed, \nPlease select line geometry only."
)
return
#loop thru selection list
while selection_list:
#get selected features
request = QgsFeatureRequest().setFilterFid(selection_list[0])
# request = QgsFeatureRequest()
feature = next(clayer.getFeatures(request))
geom = feature.geometry()
# get nodes
nodes = self.get_geometry(feature.geometry())
# get upstream node
if direction:
upstream_coord = nodes[-1]
# print (upstream_coord)
else:
upstream_coord = nodes[0]
# print (upstream_coord)
# select all features around upstream coordinate
# using a bounding box
rectangle = QgsRectangle(upstream_coord.x() - rec,
upstream_coord.y() - rec,
upstream_coord.x() + rec,
upstream_coord.y() + rec)
# rectangle = QgsRectangle (minx, miny, maxx, maxy)
request = QgsFeatureRequest().setFilterRect(rectangle)
features = clayer.getFeatures(request)
#iterate thru requested features
for feature in features:
# get nodes
nodes = self.get_geometry(feature.geometry())
#downstream_coord = nodes[-1]
# get upstream node
if direction:
downstream_coord = nodes[0]
# print (upstream_coord)
else:
downstream_coord = nodes[-1]
# print (upstream_coord)
#get distance from downstream node to upstream node
dist = distance.measureLine(downstream_coord,
upstream_coord)
if dist < tolerance:
#add feature to final list
final_list.append(feature.id())
if feature.id() not in selection_list:
#add feature to selection list
selection_list.append(feature.id())
# Length from Line
totallength = totallength + distance.measureLength(
feature.geometry())
#remove feature from selection list
selection_list.pop(0)
#select features using final_list
for fid in final_list:
clayer.select(fid)
#refresh the canvas
self.iface.mapCanvas().refresh()
#add message box about length and number of features
QMessageBox.information(
None, "Flow Trace Complete",
"Total Features Selected: " + str(len(final_list)) + "\r\n" +
" Length: " + str(round(totallength, 2)) + ' ' +
QgsUnitTypes.toString(distance.lengthUnits()))
def __init__(self, sampling_layer, columns, rows):
QDialog.__init__(self)
self.sampling_layer = sampling_layer
self.setupUi(self)
ClassificationDialog.instance = self
# flags
self.setWindowFlags(self.windowFlags() | Qt.WindowMinimizeButtonHint
| Qt.WindowMaximizeButtonHint)
# get classification or init new instance
if sampling_layer in Classification.instances:
self.classification = Classification.instances[sampling_layer]
else:
self.classification = Classification(sampling_layer)
self.classification.grid_columns = columns
self.classification.grid_rows = rows
#### settings the classification dialog
# set dialog title
self.setWindowTitle("Classification of samples for " +
sampling_layer.name())
# resize the classification dialog
if self.classification.dialog_size:
self.resize(*self.classification.dialog_size)
# disable enter action
self.QPBtn_SetClassification.setAutoDefault(False)
self.QPBtn_unclassifySampleButton.setAutoDefault(False)
# go to sample ID action
self.GoTo_ID_Button.clicked.connect(self.go_to_sample_id)
self.GoTo_ID.returnPressed.connect(self.go_to_sample_id)
self.GoTo_ID.textChanged.connect(
lambda: self.GoTo_ID.setStyleSheet(""))
# open in Google Earth
self.QPBtn_OpenInGE.clicked.connect(
self.open_current_point_in_google_engine)
# set properties and default value for the fit to sample spinBox based on sampling file
layer_dist_unit = self.sampling_layer.crs().mapUnits()
str_unit = QgsUnitTypes.toString(layer_dist_unit)
abbr_unit = QgsUnitTypes.toAbbreviatedString(layer_dist_unit)
self.radiusFitToSample.setSuffix(" {}".format(abbr_unit))
self.radiusFitToSample.setToolTip(
"Units in {} for set the zoom radius to the current sample\n"
"(units based on sampling file selected)".format(str_unit))
self.radiusFitToSample.setRange(
0,
360 if layer_dist_unit == QgsUnitTypes.DistanceDegrees else 10e6)
self.radiusFitToSample.setDecimals(4 if layer_dist_unit in [
QgsUnitTypes.DistanceKilometers, QgsUnitTypes.
DistanceNauticalMiles, QgsUnitTypes.DistanceMiles, QgsUnitTypes.
DistanceDegrees
] else 1)
self.radiusFitToSample.setSingleStep(0.0001 if layer_dist_unit in [
QgsUnitTypes.DistanceKilometers, QgsUnitTypes.
DistanceNauticalMiles, QgsUnitTypes.DistanceMiles, QgsUnitTypes.
DistanceDegrees
] else 1)
self.radiusFitToSample.setValue(self.classification.fit_to_sample)
# set total samples
self.QPBar_SamplesNavigation.setMaximum(len(
self.classification.points))
# actions for fit and go to current sample
self.radiusFitToSample.valueChanged.connect(
lambda: self.show_and_go_to_current_sample(highlight=False))
self.currentSample.clicked.connect(
lambda: self.show_and_go_to_current_sample(highlight=True))
# move through samples
self.nextSample.clicked.connect(self.next_sample)
self.nextSampleNotClassified.clicked.connect(
self.next_sample_not_classified)
self.previousSample.clicked.connect(self.previous_sample)
self.previousSampleNotClassified.clicked.connect(
self.previous_sample_not_classified)
# dialog buttons box
self.closeButton.rejected.connect(self.closing)
# disable enter action
self.closeButton.button(QDialogButtonBox.Close).setAutoDefault(False)
# init current point
self.current_sample_idx = self.classification.current_sample_idx
self.current_sample = None
self.set_current_sample()
# set classification buttons
self.classification_btns_config = ClassificationButtonsConfig(
self.classification.buttons_config)
self.create_classification_buttons(
buttons_config=self.classification.buttons_config)
self.QPBtn_SetClassification.clicked.connect(
self.open_set_classification_dialog)
self.QPBtn_unclassifySampleButton.clicked.connect(
self.unclassify_sample)
# create dynamic size of the view render widgets windows
# inside the grid with columns x rows divide by splitters
h_splitters = []
view_widgets = []
for row in range(self.classification.grid_rows):
splitter = QSplitter(Qt.Horizontal)
for column in range(self.classification.grid_columns):
new_view_widget = ClassificationViewWidget()
splitter.addWidget(new_view_widget)
h_splitters.append(splitter)
view_widgets.append(new_view_widget)
v_splitter = QSplitter(Qt.Vertical)
for splitter in h_splitters:
v_splitter.addWidget(splitter)
# add to classification dialog
self.widget_view_windows.layout().addWidget(v_splitter)
# save instances
ClassificationDialog.view_widgets = view_widgets
# setup view widget
[
view_widget.setup_view_widget(sampling_layer)
for view_widget in ClassificationDialog.view_widgets
]
for idx, view_widget in enumerate(ClassificationDialog.view_widgets):
view_widget.id = idx
# set the label names for each view
for num_view, view_widget in enumerate(
ClassificationDialog.view_widgets):
view_widget.QLabel_ViewName.setPlaceholderText(
"View {}".format(num_view + 1))
# restore view widgets status
for config_id, view_config in self.classification.view_widgets_config.items(
):
for view_widget in ClassificationDialog.view_widgets:
if config_id == view_widget.id:
view_widget = ClassificationDialog.view_widgets[config_id]
# select the file for this view widget if exists and is loaded in Qgis
layer_name = view_config["layer_name"]
if not layer_name and view_config["render_file_path"]:
layer_name = os.path.splitext(
os.path.basename(
view_config["render_file_path"]))[0]
file_index = view_widget.QCBox_RenderFile.findText(
layer_name, Qt.MatchFixedString)
if file_index != -1:
# select layer if exists in Qgis
with block_signals_to(view_widget.QCBox_RenderFile):
view_widget.QCBox_RenderFile.setCurrentIndex(
file_index)
elif view_config["render_file_path"] and os.path.isfile(
view_config["render_file_path"]):
# load file and select in view if this exists and not load in Qgis
load_and_select_filepath_in(
view_widget.QCBox_RenderFile,
view_config["render_file_path"],
layer_name=layer_name)
elif view_config["render_file_path"] and not os.path.isfile(
view_config["render_file_path"]):
self.MsgBar.pushMessage(
"Could not to load the layer '{}' in the view {}: no such file {}"
.format(
layer_name,
"'{}'".format(view_config["view_name"]) if
view_config["view_name"] else view_widget.id +
1, view_config["render_file_path"]),
level=Qgis.Warning,
duration=-1)
else:
self.MsgBar.pushMessage(
"Could not to load the layer '{}' in the view {} (for network layers use save/load a Qgis project)"
.format(
layer_name,
"'{}'".format(view_config["view_name"]) if
view_config["view_name"] else view_widget.id +
1),
level=Qgis.Warning,
duration=-1)
# TODO: restore size by view widget
# view_widget.resize(*view_config["view_size"])
view_widget.QLabel_ViewName.setText(
view_config["view_name"])
view_widget.scaleFactor.setValue(
view_config["scale_factor"])
# active render layer in canvas
view_widget.set_render_layer(
view_widget.QCBox_RenderFile.currentLayer())
def processAlgorithm(self, parameters, context, feedback):
network = self.parameterAsSource(parameters, self.INPUT, context)
startPoint = self.parameterAsPoint(parameters, self.START_POINT,
context)
endPoints = self.parameterAsSource(parameters, self.END_POINTS,
context)
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
directionFieldName = self.parameterAsString(parameters,
self.DIRECTION_FIELD,
context)
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD,
context)
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD,
context)
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH,
context)
defaultDirection = self.parameterAsEnum(parameters,
self.DEFAULT_DIRECTION,
context)
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD,
context)
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED,
context)
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
fields = QgsFields()
fields.append(QgsField('start', QVariant.String, '', 254, 0))
fields.append(QgsField('end', QVariant.String, '', 254, 0))
fields.append(QgsField('cost', QVariant.Double, '', 20, 7))
feat = QgsFeature()
feat.setFields(fields)
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT,
context, fields,
QgsWkbTypes.LineString,
network.sourceCrs())
directionField = -1
if directionFieldName:
directionField = network.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName:
speedField = network.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(network, directionField,
forwardValue, backwardValue,
bothValue, defaultDirection)
distUnit = context.project().crs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(
distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField, defaultSpeed,
multiplier * 1000.0 / 3600.0)
multiplier = 3600
director.addStrategy(strategy)
builder = QgsGraphBuilder(context.project().crs(), True, tolerance)
feedback.pushInfo(self.tr('Loading end points...'))
request = QgsFeatureRequest()
request.setFlags(request.flags()
^ QgsFeatureRequest.SubsetOfAttributes)
request.setDestinationCrs(network.sourceCrs())
features = endPoints.getFeatures(request)
total = 100.0 / endPoints.featureCount() if endPoints.featureCount(
) else 0
points = [startPoint]
for current, f in enumerate(features):
if feedback.isCanceled():
break
points.append(f.geometry().asPoint())
feedback.setProgress(int(current * total))
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, points, feedback)
feedback.pushInfo(self.tr('Calculating shortest paths...'))
graph = builder.graph()
idxStart = graph.findVertex(snappedPoints[0])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
route = []
nPoints = len(snappedPoints)
total = 100.0 / nPoints if nPoints else 1
for i in range(1, count + 1):
if feedback.isCanceled():
break
idxEnd = graph.findVertex(snappedPoints[i])
if tree[idxEnd] == -1:
msg = self.tr(
'There is no route from start point ({}) to end point ({}).'
.format(startPoint.toString(), points[i].toString()))
feedback.setProgressText(msg)
QgsMessageLog.logMessage(msg, self.tr('Processing'),
QgsMessageLog.WARNING)
continue
cost = 0.0
current = idxEnd
while current != idxStart:
cost += graph.edge(tree[current]).cost(0)
route.append(
graph.vertex(graph.edge(tree[current]).inVertex()).point())
current = graph.edge(tree[current]).outVertex()
route.append(snappedPoints[0])
route.reverse()
geom = QgsGeometry.fromPolyline(route)
feat.setGeometry(geom)
feat['start'] = startPoint.toString()
feat['end'] = points[i].toString()
feat['cost'] = cost / multiplier
sink.addFeature(feat, QgsFeatureSink.FastInsert)
route[:] = []
feedback.setProgress(int(i * total))
return {self.OUTPUT: dest_id}
def testAreaMeasureAndUnits(self):
"""Test a variety of area measurements in different CRS and ellipsoid modes, to check that the
calculated areas and units are always consistent
"""
da = QgsDistanceArea()
da.setSourceCrs(QgsCoordinateReferenceSystem.fromSrsId(3452), QgsProject.instance().transformContext())
da.setEllipsoid("NONE")
polygon = QgsGeometry.fromPolygonXY(
[[
QgsPointXY(0, 0), QgsPointXY(1, 0), QgsPointXY(1, 1), QgsPointXY(2, 1), QgsPointXY(2, 2), QgsPointXY(0, 2), QgsPointXY(0, 0),
]]
)
# We check both the measured area AND the units, in case the logic regarding
# ellipsoids and units changes in future
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
assert ((abs(area - 3.0) < 0.00000001 and units == QgsUnitTypes.AreaSquareDegrees) or
(abs(area - 37176087091.5) < 0.1 and units == QgsUnitTypes.AreaSquareMeters))
da.setEllipsoid("WGS84")
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
# should always be in Meters Squared
self.assertAlmostEqual(area, 36918093794.121284, delta=0.1)
self.assertEqual(units, QgsUnitTypes.AreaSquareMeters)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareMiles)
self.assertAlmostEqual(area, 14254.155703182701, delta=0.001)
# now try with a source CRS which is in feet
polygon = QgsGeometry.fromPolygonXY(
[[
QgsPointXY(1850000, 4423000), QgsPointXY(1851000, 4423000), QgsPointXY(1851000, 4424000), QgsPointXY(1852000, 4424000), QgsPointXY(1852000, 4425000), QgsPointXY(1851000, 4425000), QgsPointXY(1850000, 4423000)
]]
)
da.setSourceCrs(QgsCoordinateReferenceSystem.fromSrsId(27469), QgsProject.instance().transformContext())
da.setEllipsoid("NONE")
# measurement should be in square feet
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(area, 2000000, delta=0.001)
self.assertEqual(units, QgsUnitTypes.AreaSquareFeet)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareYards)
self.assertAlmostEqual(area, 222222.2222, delta=0.001)
da.setEllipsoid("WGS84")
# now should be in Square Meters again
area = da.measureArea(polygon)
units = da.areaUnits()
print(("measured {} in {}".format(area, QgsUnitTypes.toString(units))))
self.assertAlmostEqual(area, 185818.59096575077, delta=1.0)
self.assertEqual(units, QgsUnitTypes.AreaSquareMeters)
# test converting the resultant area
area = da.convertAreaMeasurement(area, QgsUnitTypes.AreaSquareYards)
self.assertAlmostEqual(area, 222237.18521272976, delta=1.0)
def processAlgorithm(self, parameters, context, feedback):
layer = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT_VECTOR), context)
startPoints = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.START_POINTS), context)
endPoint = self.getParameterValue(self.END_POINT)
strategy = self.getParameterValue(self.STRATEGY)
directionFieldName = self.getParameterValue(self.DIRECTION_FIELD)
forwardValue = self.getParameterValue(self.VALUE_FORWARD)
backwardValue = self.getParameterValue(self.VALUE_BACKWARD)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
bothValue = self.getParameterValue(self.VALUE_BOTH)
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
speedFieldName = self.getParameterValue(self.SPEED_FIELD)
defaultSpeed = self.getParameterValue(self.DEFAULT_SPEED)
tolerance = self.getParameterValue(self.TOLERANCE)
fields = QgsFields()
fields.append(QgsField('start', QVariant.String, '', 254, 0))
fields.append(QgsField('end', QVariant.String, '', 254, 0))
fields.append(QgsField('cost', QVariant.Double, '', 20, 7))
feat = QgsFeature()
feat.setFields(fields)
writer = self.getOutputFromName(
self.OUTPUT_LAYER).getVectorWriter(fields, QgsWkbTypes.LineString, layer.crs(), context)
tmp = endPoint.split(',')
endPoint = QgsPointXY(float(tmp[0]), float(tmp[1]))
directionField = -1
if directionFieldName is not None:
directionField = layer.fields().lookupField(directionFieldName)
speedField = -1
if speedFieldName is not None:
speedField = layer.fields().lookupField(speedFieldName)
director = QgsVectorLayerDirector(layer,
directionField,
forwardValue,
backwardValue,
bothValue,
defaultDirection)
distUnit = iface.mapCanvas().mapSettings().destinationCrs().mapUnits()
multiplier = QgsUnitTypes.fromUnitToUnitFactor(distUnit, QgsUnitTypes.DistanceMeters)
if strategy == 0:
strategy = QgsNetworkDistanceStrategy()
else:
strategy = QgsNetworkSpeedStrategy(speedField,
defaultSpeed,
multiplier * 1000.0 / 3600.0)
multiplier = 3600
director.addStrategy(strategy)
builder = QgsGraphBuilder(iface.mapCanvas().mapSettings().destinationCrs(),
True,
tolerance)
feedback.pushInfo(self.tr('Loading start points...'))
request = QgsFeatureRequest()
request.setFlags(request.flags() ^ QgsFeatureRequest.SubsetOfAttributes)
features = QgsProcessingUtils.getFeatures(startPoints, context, request)
count = QgsProcessingUtils.featureCount(startPoints, context)
points = [endPoint]
for f in features:
points.append(f.geometry().asPoint())
feedback.pushInfo(self.tr('Building graph...'))
snappedPoints = director.makeGraph(builder, points)
feedback.pushInfo(self.tr('Calculating shortest paths...'))
graph = builder.graph()
idxEnd = graph.findVertex(snappedPoints[0])
route = []
total = 100.0 / count if count else 1
for i in range(1, count + 1):
idxStart = graph.findVertex(snappedPoints[i])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
if tree[idxEnd] == -1:
msg = self.tr('There is no route from start point ({}) to end point ({}).'.format(points[i].toString(), endPoint.toString()))
feedback.setProgressText(msg)
QgsMessageLog.logMessage(msg, self.tr('Processing'), QgsMessageLog.WARNING)
continue
cost = 0.0
current = idxEnd
while current != idxStart:
cost += graph.edge(tree[current]).cost(0)
route.append(graph.vertex(graph.edge(tree[current]).inVertex()).point())
current = graph.edge(tree[current]).outVertex()
route.append(snappedPoints[i])
route.reverse()
geom = QgsGeometry.fromPolyline(route)
feat.setGeometry(geom)
feat['start'] = points[i].toString()
feat['end'] = endPoint.toString()
feat['cost'] = cost / multiplier
writer.addFeature(feat, QgsFeatureSink.FastInsert)
route[:] = []
feedback.setProgress(int(i * total))
del writer
def save(file_out):
import yaml
from AcATaMa.gui.acatama_dockwidget import AcATaMaDockWidget as AcATaMa
def setup_yaml():
"""
Keep dump ordered with orderedDict
"""
represent_dict_order = lambda self, data: self.represent_mapping('tag:yaml.org,2002:map',
list(data.items()))
yaml.add_representer(OrderedDict, represent_dict_order)
setup_yaml()
data = OrderedDict()
data["thematic_raster"] = \
{"path": get_current_file_path_in(AcATaMa.dockwidget.QCBox_ThematicRaster, show_message=False),
"band": int(AcATaMa.dockwidget.QCBox_band_ThematicRaster.currentText())
if AcATaMa.dockwidget.QCBox_band_ThematicRaster.currentText() else None,
"nodata": AcATaMa.dockwidget.nodata_ThematicRaster.value()}
# ######### general configuration ######### #
data["general"] = {"tab_activated": AcATaMa.dockwidget.tabWidget.currentIndex()}
# ######### classification configuration ######### #
sampling_layer = AcATaMa.dockwidget.QCBox_SamplingFile.currentLayer()
if sampling_layer in Classification.instances:
# data["classification"] = {} # TODO
classification = Classification.instances[sampling_layer]
data["sampling_layer"] = get_file_path_of_layer(classification.sampling_layer)
data["dialog_size"] = classification.dialog_size
data["grid_view_widgets"] = {"columns": classification.grid_columns, "rows": classification.grid_rows}
data["current_sample_idx"] = classification.current_sample_idx
data["fit_to_sample"] = classification.fit_to_sample
data["is_completed"] = classification.is_completed
data["view_widgets_config"] = classification.view_widgets_config
data["classification_buttons"] = classification.buttons_config
# save samples status
points_config = {}
for pnt_idx, point in enumerate(classification.points):
if point.is_classified:
points_config[pnt_idx] = {"classif_id": point.classif_id, "shape_id": point.shape_id}
data["points"] = points_config
# save the samples order
data["points_order"] = [p.shape_id for p in classification.points]
else:
classification = None
# ######### accuracy assessment ######### #
data["accuracy_assessment"] = {}
data["accuracy_assessment"]["sampling_file"] = get_current_file_path_in(AcATaMa.dockwidget.QCBox_SamplingFile_AA,
show_message=False)
data["accuracy_assessment"]["sampling_type"] = AcATaMa.dockwidget.QCBox_SamplingType_AA.currentIndex()
# save config of the accuracy assessment dialog if exists
if classification and classification.accuracy_assessment:
data["accuracy_assessment"]["dialog"] = {
"area_unit": QgsUnitTypes.toString(classification.accuracy_assessment.area_unit),
"z_score": classification.accuracy_assessment.z_score,
"csv_separator": classification.accuracy_assessment.csv_separator,
"csv_decimal": classification.accuracy_assessment.csv_decimal,
}
with open(file_out, 'w') as yaml_file:
yaml.dump(data, yaml_file)
def testMeasureLineProjectedWorldPoints(self):
# +-+
# | |
# +-+ +
# checking returned length_mapunits/projected_points of diffferent world points with results from SpatiaLite ST_Project
da_3068 = QgsDistanceArea()
da_3068.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:3068'), QgsProject.instance().transformContext())
if (da_3068.sourceCrs().isGeographic()):
da_3068.setEllipsoid(da_3068.sourceCrs().ellipsoidAcronym())
self.assertEqual(da_3068.sourceCrs().authid(), 'EPSG:3068')
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}]".format(u'EPSG:3068', da_3068.sourceCrs().authid(), da_3068.sourceCrs().description(), da_3068.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_3068.lengthUnits()), da_3068.sourceCrs().projectionAcronym(), da_3068.sourceCrs().ellipsoidAcronym())))
da_wsg84 = QgsDistanceArea()
da_wsg84.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:4326'), QgsProject.instance().transformContext())
if (da_wsg84.sourceCrs().isGeographic()):
da_wsg84.setEllipsoid(da_wsg84.sourceCrs().ellipsoidAcronym())
self.assertEqual(da_wsg84.sourceCrs().authid(), 'EPSG:4326')
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}] ellipsoid[{}]".format(u'EPSG:4326', da_wsg84.sourceCrs().authid(), da_wsg84.sourceCrs().description(), da_wsg84.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_wsg84.lengthUnits()), da_wsg84.sourceCrs().projectionAcronym(), da_wsg84.sourceCrs().ellipsoidAcronym(), da_wsg84.ellipsoid())))
da_4314 = QgsDistanceArea()
da_4314.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:4314'), QgsProject.instance().transformContext())
if (da_4314.sourceCrs().isGeographic()):
da_4314.setEllipsoid(da_4314.sourceCrs().ellipsoidAcronym())
self.assertEqual(da_4314.sourceCrs().authid(), 'EPSG:4314')
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}]".format(u'EPSG:4314', da_4314.sourceCrs().authid(), da_4314.sourceCrs().description(), da_4314.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_4314.lengthUnits()), da_4314.sourceCrs().projectionAcronym(), da_4314.sourceCrs().ellipsoidAcronym())))
da_4805 = QgsDistanceArea()
da_4805.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:4805'), QgsProject.instance().transformContext())
if (da_4805.sourceCrs().isGeographic()):
da_4805.setEllipsoid(da_4805.sourceCrs().ellipsoidAcronym())
self.assertEqual(da_4805.sourceCrs().authid(), 'EPSG:4805')
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}]".format(u'EPSG:4805', da_4805.sourceCrs().authid(), da_4805.sourceCrs().description(), da_4805.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_4805.lengthUnits()), da_4805.sourceCrs().projectionAcronym(), da_4805.sourceCrs().ellipsoidAcronym())))
# EPSG:5665 unknown, why?
da_5665 = QgsDistanceArea()
da_5665.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:5665'), QgsProject.instance().transformContext())
if (da_5665.sourceCrs().isGeographic()):
da_5665.setEllipsoid(da_5665.sourceCrs().ellipsoidAcronym())
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}]".format(u'EPSG:5665', da_5665.sourceCrs().authid(), da_5665.sourceCrs().description(), da_5665.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_5665.lengthUnits()), da_5665.sourceCrs().projectionAcronym(), da_5665.sourceCrs().ellipsoidAcronym())))
#self.assertEqual(da_5665.sourceCrs().authid(), 'EPSG:5665')
da_25833 = QgsDistanceArea()
da_25833.setSourceCrs(QgsCoordinateReferenceSystem.fromOgcWmsCrs('EPSG:25833'), QgsProject.instance().transformContext())
if (da_25833.sourceCrs().isGeographic()):
da_25833.setEllipsoid(da_25833.sourceCrs().ellipsoidAcronym())
print(("setting [{}] srid [{}] description [{}] isGeographic[{}] lengthUnits[{}] projectionAcronym[{}] ellipsoidAcronym[{}]".format(u'EPSG:25833', da_25833.sourceCrs().authid(), da_25833.sourceCrs().description(), da_25833.sourceCrs().isGeographic(), QgsUnitTypes.toString(da_25833.lengthUnits()), da_25833.sourceCrs().projectionAcronym(), da_25833.sourceCrs().ellipsoidAcronym())))
self.assertEqual(da_25833.sourceCrs().authid(), 'EPSG:25833')
# Berlin - Brandenburg Gate - Quadriga
point_berlin_3068 = QgsPointXY(23183.38449999984, 21047.3225000017)
point_berlin_3068_project = point_berlin_3068.project(1, (math.pi / 2))
point_meter_result = QgsPointXY(0, 0)
length_meter_mapunits, point_meter_result = da_3068.measureLineProjected(point_berlin_3068, 1.0, (math.pi / 2))
pprint(point_meter_result)
print('-I-> Berlin 3068 length_meter_mapunits[{}] point_meter_result[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_3068.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 1, da_3068.lengthUnits(), True), '1.0 m')
self.assertEqual(point_meter_result.toString(7), point_berlin_3068_project.toString(7))
point_berlin_wsg84 = QgsPointXY(13.37770458660236, 52.51627178856762)
point_berlin_wsg84_project = QgsPointXY(13.37771931736259, 52.51627178856669)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_berlin_wsg84, 1.0, (math.pi / 2))
print('-I-> Berlin Wsg84 length_meter_mapunits[{}] point_meter_result[{}] ellipsoid[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 20, da_wsg84.lengthUnits(), True), point_meter_result.asWkt(), da_wsg84.ellipsoid()))
# for unknown reasons, this is returning '0.00001473026 m' instead of '0.00001473026 deg' when using da_wsg84.lengthUnits()
# self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits,11,da_wsg84.lengthUnits(),True), '0.00001473026 deg')
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 11, QgsUnitTypes.DistanceDegrees, True), '0.00001473026 deg')
self.assertEqual(point_meter_result.toString(7), point_berlin_wsg84_project.toString(7))
point_berlin_4314 = QgsPointXY(13.37944343021465, 52.51767872437083)
point_berlin_4314_project = QgsPointXY(13.37945816324759, 52.5176787243699)
length_meter_mapunits, point_meter_result = da_4314.measureLineProjected(point_berlin_4314, 1.0, (math.pi / 2))
print('-I-> Berlin 4314 length_meter_mapunits[{}] point_meter_result[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_4314.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 9, QgsUnitTypes.DistanceDegrees, True), '0.000014733 deg')
self.assertEqual(point_meter_result.toString(7), point_berlin_4314_project.toString(7))
point_berlin_4805 = QgsPointXY(31.04960570069176, 52.5174657497405)
point_berlin_4805_project = QgsPointXY(31.04962043365347, 52.51746574973957)
length_meter_mapunits, point_meter_result = da_4805.measureLineProjected(point_berlin_4805, 1.0, (math.pi / 2))
print('-I-> Berlin 4805 length_meter_mapunits[{}] point_meter_result[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_4805.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 9, QgsUnitTypes.DistanceDegrees, True), '0.000014733 deg')
self.assertEqual(point_meter_result.toString(7), point_berlin_4805_project.toString(7))
point_berlin_25833 = QgsPointXY(389918.0748318382, 5819698.772194743)
point_berlin_25833_project = point_berlin_25833.project(1, (math.pi / 2))
length_meter_mapunits, point_meter_result = da_25833.measureLineProjected(point_berlin_25833, 1.0, (math.pi / 2))
print('-I-> Berlin 25833 length_meter_mapunits[{}] point_meter_result[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_25833.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_25833.lengthUnits(), True), '1.0000000 m')
self.assertEqual(point_meter_result.toString(7), point_berlin_25833_project.toString(7))
if da_5665.sourceCrs().authid() != "":
point_berlin_5665 = QgsPointXY(3389996.871728864, 5822169.719727578)
point_berlin_5665_project = point_berlin_5665.project(1, (math.pi / 2))
length_meter_mapunits, point_meter_result = da_5665.measureLineProjected(point_berlin_5665, 1.0, (math.pi / 2))
print('-I-> Berlin 5665 length_meter_mapunits[{}] point_meter_result[{}]'.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_5665.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 1.0, da_5665.lengthUnits(), True), '1.0 m')
self.assertEqual(point_meter_result.toString(7), point_berlin_5665_project.toString(7))
print('\n12 points ''above over'' and on the Equator')
point_wsg84 = QgsPointXY(25.7844, 71.1725)
point_wsg84_project = QgsPointXY(25.78442775215388, 71.17249999999795)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Nordkap, Norway - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, QgsUnitTypes.DistanceDegrees, True), '0.0000278 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(24.95995, 60.16841)
point_wsg84_project = QgsPointXY(24.95996801277454, 60.16840999999877)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Helsinki, Finnland - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001801 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(12.599278, 55.692861)
point_wsg84_project = QgsPointXY(12.59929390161872, 55.69286099999897)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Copenhagen, Denmark - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001590 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-0.001389, 51.477778)
point_wsg84_project = QgsPointXY(-0.001374606184398, 51.4777779999991)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Royal Greenwich Observatory, United Kingdom - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001439 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(7.58769, 47.55814)
point_wsg84_project = QgsPointXY(7.587703287209086, 47.55813999999922)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Basel, Switzerland - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001329 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(11.255278, 43.775278)
point_wsg84_project = QgsPointXY(11.25529042107924, 43.77527799999933)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Florenz, Italy - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001242 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(14.514722, 35.899722)
point_wsg84_project = QgsPointXY(14.51473307693308, 35.89972199999949)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Valletta, Malta - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001108 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-79.933333, 32.783333)
point_wsg84_project = QgsPointXY(-79.93332232547254, 32.78333299999955)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Charlston, South Carolina - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001067 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-17.6666666, 27.733333)
point_wsg84_project = QgsPointXY(-17.66665645831515, 27.73333299999962)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Ferro, Spain - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001014 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-99.133333, 19.433333)
point_wsg84_project = QgsPointXY(-99.1333234776827, 19.43333299999975)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Mexico City, Mexico - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000952 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-79.894444, 9.341667)
point_wsg84_project = QgsPointXY(-79.89443489691369, 9.341666999999882)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Colón, Panama - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000910 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-74.075833, 4.598056)
point_wsg84_project = QgsPointXY(-74.07582398803629, 4.598055999999943)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Bogotá, Colombia - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000901 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(0, 0)
point_wsg84_project = QgsPointXY(0.000008983152841, 0)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Equator, Atlantic Ocean - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000898 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
print('\n12 points ''down under'' and 1 point that should be considered invalid')
point_wsg84 = QgsPointXY(-78.509722, -0.218611)
point_wsg84_project = QgsPointXY(-78.50971301678221, -0.218610999999997)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Quito, Ecuador - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000898 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(106.816667, -6.2)
point_wsg84_project = QgsPointXY(106.8166760356519, -6.199999999999922)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Jakarta, Indonesia - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000904 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-77.018611, -12.035)
point_wsg84_project = QgsPointXY(-77.01860181630058, -12.03499999999985)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Lima, Peru - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000918 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(25.466667, -10.716667)
point_wsg84_project = QgsPointXY(25.46667614155322, -10.71666699999986)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Kolwezi, Congo - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000914 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-70.333333, -18.483333)
point_wsg84_project = QgsPointXY(-70.3333235314429, -18.48333299999976)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Arica, Chile - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00000947 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-70.666667, -33.45)
point_wsg84_project = QgsPointXY(-70.66665624452817, -33.44999999999953)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Santiago, Chile - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001076 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(144.9604, -37.8191)
point_wsg84_project = QgsPointXY(144.96041135746983741, -37.81909999999945171)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Melbourne, Australia - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001136 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(147.29, -42.88)
point_wsg84_project = QgsPointXY(147.2900122399815, -42.87999999999934)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Hobart City,Tasmania, Australia - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001224 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(168.101667, -46.899722)
point_wsg84_project = QgsPointXY(168.101680123673, -46.89972199999923)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Ryan''s Creek Aerodrome, New Zealand - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001312 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-69.216667, -51.633333)
point_wsg84_project = QgsPointXY(-69.21665255700216, -51.6333329999991)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Río Gallegos, Argentina - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001444 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-68.3, -54.8)
point_wsg84_project = QgsPointXY(-68.29998445081456, -54.79999999999899)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Ushuaia, Tierra del Fuego, Argentina - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00001555 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-63.494444, -64.825278)
point_wsg84_project = QgsPointXY(-63.49442294002932, -64.82527799999851)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Port Lockroy, Antarctica - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00002106 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-180, -84.863272250)
point_wsg84_project = QgsPointXY(-179.9999000000025, -84.8632722499922)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-I-> Someware, Antarctica - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00010000 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
point_wsg84 = QgsPointXY(-180, -85.0511300)
point_wsg84_project = QgsPointXY(-179.9998962142197, -85.05112999999191)
length_meter_mapunits, point_meter_result = da_wsg84.measureLineProjected(point_wsg84, 1.0, (math.pi / 2))
print('-W-> Mercator''s Last Stop, Antarctica - Wsg84 - length_meter_mapunits[{}] point_meter_result[{}] '.format(QgsDistanceArea.formatDistance(length_meter_mapunits, 7, da_wsg84.lengthUnits(), True), point_meter_result.asWkt()))
self.assertEqual(QgsDistanceArea.formatDistance(length_meter_mapunits, 8, QgsUnitTypes.DistanceDegrees, True), '0.00010379 deg')
self.assertEqual(point_meter_result.toString(7), point_wsg84_project.toString(7))
def processEllipse(self, layer, outname, semimajorcol, semiminorcol,
orientcol, unitOfMeasure, defSemiMajor, defSemiMinor,
defOrientation):
measureFactor = 1.0
# The ellipse calculation is done in Nautical Miles. This converts
# the semi-major and minor axis to nautical miles
if unitOfMeasure == 2: # Nautical Miles
measureFactor = 1.0
elif unitOfMeasure == 0: # Kilometers
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceNauticalMiles) * 1000.0
elif unitOfMeasure == 1: # Meters
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceMeters,
QgsUnitTypes.DistanceNauticalMiles)
elif unitOfMeasure == 3: # Miles
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceFeet,
QgsUnitTypes.DistanceNauticalMiles) * 5280.0
elif unitOfMeasure == 4: # Feet
measureFactor = QgsUnitTypes.fromUnitToUnitFactor(
QgsUnitTypes.DistanceFeet, QgsUnitTypes.DistanceNauticalMiles)
fields = layer.fields()
self.polygonLayer = QgsVectorLayer(
"Polygon?crs={}".format(self.outputCRS.authid()), outname,
"memory")
ppolygon = self.polygonLayer.dataProvider()
ppolygon.addAttributes(fields)
self.polygonLayer.updateFields()
iter = layer.getFeatures()
num_features = 0
num_good = 0
for feature in iter:
num_features += 1
try:
if semimajorcol != -1:
semi_major = float(feature[semimajorcol])
else:
semi_major = defSemiMajor
if semiminorcol != -1:
semi_minor = float(feature[semiminorcol])
else:
semi_minor = defSemiMinor
if orientcol != -1:
orient = float(feature[orientcol])
else:
orient = defOrientation
pt = feature.geometry().asPoint()
# make sure the coordinates are in EPSG:4326
pt = self.transform.transform(pt.x(), pt.y())
pts = LatLon.getEllipseCoords(pt.y(), pt.x(),
semi_major * measureFactor,
semi_minor * measureFactor,
orient)
# If the Output crs is not 4326 transform the points to the proper crs
if self.outputCRS != epsg4326:
for x, ptout in enumerate(pts):
pts[x] = self.transformOut.transform(ptout)
featureout = QgsFeature()
featureout.setGeometry(QgsGeometry.fromPolygonXY([pts]))
featureout.setAttributes(feature.attributes())
ppolygon.addFeatures([featureout])
num_good += 1
except:
# Just skip any lines that are badly formed
#traceback.print_exc()
pass
self.polygonLayer.updateExtents()
QgsProject.instance().addMapLayer(self.polygonLayer)
self.iface.messageBar().pushMessage(
"",
"{} Ellipses created from {} records".format(
num_good, num_features),
level=Qgis.Info,
duration=3)
def spatial_unit(self):
u = self.rgis.crs.mapUnits()
su = QgsUnitTypes.toString(u).upper()
return su
