def testContextSingle(self):
"""
Various tests to ensure that datum transforms are correctly set respecting context
"""
context = QgsCoordinateTransformContext()
context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 1)
context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:4283'), 2)
context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'),
3, 4)
transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
# should be no datum transforms
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
# matching source
transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
self.assertEqual(transform.sourceDatumTransformId(), 1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
# matching dest
transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'),
QgsCoordinateReferenceSystem('EPSG:4283'), context)
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), 2)
# matching src/dest pair
transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'), context)
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
# test manual overwriting
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
self.assertEqual(transform.sourceDatumTransformId(), 11)
self.assertEqual(transform.destinationDatumTransformId(), 13)
# test that auto datum setting occurs when updating src/dest crs
transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
# delayed context set
transform = QgsCoordinateTransform()
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
transform.setContext(context)
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
def testWriteReadXmlSingleVariant(self):
# setup a context
context = QgsCoordinateTransformContext()
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'), 1))
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 2))
self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3113'), 11))
self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28355'), 12))
self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283'), 1, 2))
self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem(4283), 3, 4))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3113': 11, 'EPSG:28355': 12})
self.assertEqual(context.sourceDestinationDatumTransforms(), {('EPSG:3111', 'EPSG:4283'): (1, 2),
('EPSG:28356', 'EPSG:4283'): (3, 4)})
# save to xml
doc = QDomDocument("testdoc")
elem = doc.createElement("test")
context.writeXml(elem, QgsReadWriteContext())
# restore from xml
context2 = QgsCoordinateTransformContext()
context2.readXml(elem, QgsReadWriteContext())
# check result
self.assertEqual(context2.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
self.assertEqual(context2.destinationDatumTransforms(), {'EPSG:3113': 11, 'EPSG:28355': 12})
self.assertEqual(context2.sourceDestinationDatumTransforms(), {('EPSG:3111', 'EPSG:4283'): (1, 2),
('EPSG:28356', 'EPSG:4283'): (3, 4)})
def testCalculate(self):
context = QgsCoordinateTransformContext()
#empty context
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, -1))
#add src transform
context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 1)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:4283'),
QgsCoordinateReferenceSystem('EPSG:28356')),
(-1, -1))
#add dest transform
context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:4283'), 2)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4326')),
(-1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, 2))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:4283'),
QgsCoordinateReferenceSystem('EPSG:3111')),
(-1, -1))
#add specific source/dest pair - should take precedence
context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'),
3, 4)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(3, 4))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, 2))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:3111')),
(1, -1))
def testCalculate(self):
context = QgsCoordinateTransformContext()
#empty context
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, -1))
#add src transform
context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 1)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:4283'),
QgsCoordinateReferenceSystem('EPSG:28356')),
(-1, -1))
#add dest transform
context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:4283'), 2)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4326')),
(-1, -1))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, 2))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:4283'),
QgsCoordinateReferenceSystem('EPSG:3111')),
(-1, -1))
#add specific source/dest pair - should take precedence
context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'),
3, 4)
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(3, 4))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283')),
(-1, 2))
self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:3111')),
(1, -1))
def testSourceDatumTransforms(self):
context = QgsCoordinateTransformContext()
self.assertEqual(context.sourceDatumTransforms(), {})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'), 1))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 2))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 3))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(28356), 3))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
# invalid crs should fail
self.assertFalse(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(), 4))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
# indicate no transform required
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(28357), -1))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})
# removing non-existing
context.removeSourceDatumTransform(QgsCoordinateReferenceSystem(28354))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})
# remove existing
context.removeSourceDatumTransform(QgsCoordinateReferenceSystem(28356))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28357': -1})
context.clear()
self.assertEqual(context.sourceDatumTransforms(), {})
def testSourceDatumTransforms(self):
context = QgsCoordinateTransformContext()
self.assertEqual(context.sourceDatumTransforms(), {})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'), 1))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 2))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 3))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(28356), 3))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
# invalid crs should fail
self.assertFalse(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(), 4))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
# indicate no transform required
self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem(28357), -1))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})
# removing non-existing
context.removeSourceDatumTransform(QgsCoordinateReferenceSystem(28354))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})
# remove existing
context.removeSourceDatumTransform(QgsCoordinateReferenceSystem(28356))
self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28357': -1})
context.clear()
self.assertEqual(context.sourceDatumTransforms(), {})
def testContextSingle(self):
"""
Various tests to ensure that datum transforms are correctly set respecting context
"""
context = QgsCoordinateTransformContext()
context.addSourceDatumTransform(
QgsCoordinateReferenceSystem('EPSG:28356'), 1)
context.addDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:4283'), 2)
context.addSourceDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'), 3, 4)
transform = QgsCoordinateTransform(
QgsCoordinateReferenceSystem('EPSG:28354'),
QgsCoordinateReferenceSystem('EPSG:28353'), context)
# should be no datum transforms
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
# matching source
transform = QgsCoordinateTransform(
QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:28353'), context)
self.assertEqual(transform.sourceDatumTransformId(), 1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
# matching dest
transform = QgsCoordinateTransform(
QgsCoordinateReferenceSystem('EPSG:28354'),
QgsCoordinateReferenceSystem('EPSG:4283'), context)
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), 2)
# matching src/dest pair
transform = QgsCoordinateTransform(
QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem('EPSG:4283'), context)
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
# test manual overwriting
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
self.assertEqual(transform.sourceDatumTransformId(), 11)
self.assertEqual(transform.destinationDatumTransformId(), 13)
# test that auto datum setting occurs when updating src/dest crs
transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
transform.setSourceDatumTransform(11)
transform.setDestinationDatumTransform(13)
# delayed context set
transform = QgsCoordinateTransform()
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
self.assertEqual(transform.sourceDatumTransformId(), -1)
self.assertEqual(transform.destinationDatumTransformId(), -1)
transform.setContext(context)
self.assertEqual(transform.sourceDatumTransformId(), 3)
self.assertEqual(transform.destinationDatumTransformId(), 4)
def testWriteReadXmlSingleVariant(self):
# setup a context
context = QgsCoordinateTransformContext()
self.assertTrue(
context.addSourceDatumTransform(
QgsCoordinateReferenceSystem('EPSG:3111'), 1))
self.assertTrue(
context.addSourceDatumTransform(
QgsCoordinateReferenceSystem('EPSG:28356'), 2))
self.assertTrue(
context.addDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:3113'), 11))
self.assertTrue(
context.addDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:28355'), 12))
self.assertTrue(
context.addSourceDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283'), 1, 2))
self.assertTrue(
context.addSourceDestinationDatumTransform(
QgsCoordinateReferenceSystem('EPSG:28356'),
QgsCoordinateReferenceSystem(4283), 3, 4))
self.assertEqual(context.sourceDatumTransforms(), {
'EPSG:3111': 1,
'EPSG:28356': 2
})
self.assertEqual(context.destinationDatumTransforms(), {
'EPSG:3113': 11,
'EPSG:28355': 12
})
self.assertEqual(
context.sourceDestinationDatumTransforms(), {
('EPSG:3111', 'EPSG:4283'): (1, 2),
('EPSG:28356', 'EPSG:4283'): (3, 4)
})
# save to xml
doc = QDomDocument("testdoc")
elem = doc.createElement("test")
context.writeXml(elem, QgsReadWriteContext())
# restore from xml
context2 = QgsCoordinateTransformContext()
context2.readXml(elem, QgsReadWriteContext())
# check result
self.assertEqual(context2.sourceDatumTransforms(), {
'EPSG:3111': 1,
'EPSG:28356': 2
})
self.assertEqual(context2.destinationDatumTransforms(), {
'EPSG:3113': 11,
'EPSG:28355': 12
})
self.assertEqual(
context2.sourceDestinationDatumTransforms(), {
('EPSG:3111', 'EPSG:4283'): (1, 2),
('EPSG:28356', 'EPSG:4283'): (3, 4)
})
