def test_overlaps(self):
self.assertIs(
OGRGeometry('POLYGON ((0 0, 0 2, 2 2, 2 0, 0 0))').overlaps(
OGRGeometry('POLYGON ((1 1, 1 5, 5 5, 5 1, 1 1))')), True)
self.assertIs(
OGRGeometry('POINT(0 0)').overlaps(OGRGeometry('POINT(0 1)')),
False)
def test_touches(self):
self.assertIs(
OGRGeometry('POLYGON ((0 0, 0 1, 1 1, 1 0, 0 0))').touches(
OGRGeometry('LINESTRING(0 2, 2 0)')), True)
self.assertIs(
OGRGeometry('POINT(0 0)').touches(OGRGeometry('POINT(0 1)')),
False)
def test_equals(self):
self.assertIs(
OGRGeometry('POINT(0 0)').contains(OGRGeometry('POINT(0 0)')),
True)
self.assertIs(
OGRGeometry('POINT(0 0)').contains(OGRGeometry('POINT(0 1)')),
False)
def test_crosses(self):
self.assertIs(
OGRGeometry('LINESTRING(0 0, 1 1)').crosses(
OGRGeometry('LINESTRING(0 1, 1 0)')), True)
self.assertIs(
OGRGeometry('LINESTRING(0 0, 0 1)').crosses(
OGRGeometry('LINESTRING(1 0, 1 1)')), False)
def test_intersects(self):
self.assertIs(
OGRGeometry('LINESTRING(0 0, 1 1)').intersects(
OGRGeometry('LINESTRING(0 1, 1 0)')), True)
self.assertIs(
OGRGeometry('LINESTRING(0 0, 0 1)').intersects(
OGRGeometry('LINESTRING(1 0, 1 1)')), False)
def test_disjoint(self):
self.assertIs(
OGRGeometry('LINESTRING(0 0, 1 1)').disjoint(
OGRGeometry('LINESTRING(0 1, 1 0)')), False)
self.assertIs(
OGRGeometry('LINESTRING(0 0, 0 1)').disjoint(
OGRGeometry('LINESTRING(1 0, 1 1)')), True)
def test_hex(self):
"Testing HEX input/output."
for g in self.geometries.hex_wkt:
geom1 = OGRGeometry(g.wkt)
self.assertEqual(g.hex.encode(), geom1.hex)
# Constructing w/HEX
geom2 = OGRGeometry(g.hex)
self.assertEqual(geom1, geom2)
def test_wkb(self):
"Testing WKB input/output."
for g in self.geometries.hex_wkt:
geom1 = OGRGeometry(g.wkt)
wkb = geom1.wkb
self.assertEqual(wkb.hex().upper(), g.hex)
# Constructing w/WKB.
geom2 = OGRGeometry(wkb)
self.assertEqual(geom1, geom2)
def test_srs(self):
"Testing OGR Geometries with Spatial Reference objects."
for mp in self.geometries.multipolygons:
# Creating a geometry w/spatial reference
sr = SpatialReference('WGS84')
mpoly = OGRGeometry(mp.wkt, sr)
self.assertEqual(sr.wkt, mpoly.srs.wkt)
# Ensuring that SRS is propagated to clones.
klone = mpoly.clone()
self.assertEqual(sr.wkt, klone.srs.wkt)
# Ensuring all children geometries (polygons and their rings) all
# return the assigned spatial reference as well.
for poly in mpoly:
self.assertEqual(sr.wkt, poly.srs.wkt)
for ring in poly:
self.assertEqual(sr.wkt, ring.srs.wkt)
# Ensuring SRS propagate in topological ops.
a = OGRGeometry(self.geometries.topology_geoms[0].wkt_a, sr)
b = OGRGeometry(self.geometries.topology_geoms[0].wkt_b, sr)
diff = a.difference(b)
union = a.union(b)
self.assertEqual(sr.wkt, diff.srs.wkt)
self.assertEqual(sr.srid, union.srs.srid)
# Instantiating w/an integer SRID
mpoly = OGRGeometry(mp.wkt, 4326)
self.assertEqual(4326, mpoly.srid)
mpoly.srs = SpatialReference(4269)
self.assertEqual(4269, mpoly.srid)
self.assertEqual('NAD83', mpoly.srs.name)
# Incrementing through the multipolygon after the spatial reference
# has been re-assigned.
for poly in mpoly:
self.assertEqual(mpoly.srs.wkt, poly.srs.wkt)
poly.srs = 32140
for ring in poly:
# Changing each ring in the polygon
self.assertEqual(32140, ring.srs.srid)
self.assertEqual('NAD83 / Texas South Central',
ring.srs.name)
ring.srs = str(SpatialReference(4326)) # back to WGS84
self.assertEqual(4326, ring.srs.srid)
# Using the `srid` property.
ring.srid = 4322
self.assertEqual('WGS 72', ring.srs.name)
self.assertEqual(4322, ring.srid)
# srs/srid may be assigned their own values, even when srs is None.
mpoly = OGRGeometry(mp.wkt, srs=None)
mpoly.srs = mpoly.srs
mpoly.srid = mpoly.srid
def test_25D(self):
"Testing 2.5D geometries."
pnt_25d = OGRGeometry('POINT(1 2 3)')
self.assertEqual('Point25D', pnt_25d.geom_type.name)
self.assertEqual(3.0, pnt_25d.z)
self.assertEqual(3, pnt_25d.coord_dim)
ls_25d = OGRGeometry('LINESTRING(1 1 1,2 2 2,3 3 3)')
self.assertEqual('LineString25D', ls_25d.geom_type.name)
self.assertEqual([1.0, 2.0, 3.0], ls_25d.z)
self.assertEqual(3, ls_25d.coord_dim)
def test_ewkt(self):
"Testing EWKT input/output."
for ewkt_val in ('POINT (1 2 3)', 'LINEARRING (0 0,1 1,2 1,0 0)'):
# First with ewkt output when no SRID in EWKT
self.assertEqual(ewkt_val, OGRGeometry(ewkt_val).ewkt)
# No test consumption with an SRID specified.
ewkt_val = 'SRID=4326;%s' % ewkt_val
geom = OGRGeometry(ewkt_val)
self.assertEqual(ewkt_val, geom.ewkt)
self.assertEqual(4326, geom.srs.srid)
def test_union(self):
"Testing union()."
for i in range(len(self.geometries.topology_geoms)):
a = OGRGeometry(self.geometries.topology_geoms[i].wkt_a)
b = OGRGeometry(self.geometries.topology_geoms[i].wkt_b)
u1 = OGRGeometry(self.geometries.union_geoms[i].wkt)
u2 = a.union(b)
self.assertEqual(u1, u2)
self.assertEqual(u1, a | b) # __or__ is union operator
a |= b # testing __ior__
self.assertEqual(u1, a)
def test_difference(self):
"Testing difference()."
for i in range(len(self.geometries.topology_geoms)):
a = OGRGeometry(self.geometries.topology_geoms[i].wkt_a)
b = OGRGeometry(self.geometries.topology_geoms[i].wkt_b)
d1 = OGRGeometry(self.geometries.diff_geoms[i].wkt)
d2 = a.difference(b)
self.assertEqual(d1, d2)
self.assertEqual(d1, a - b) # __sub__ is difference operator
a -= b # testing __isub__
self.assertEqual(d1, a)
def test_linearring(self):
"Testing LinearRing objects."
prev = OGRGeometry('POINT(0 0)')
for rr in self.geometries.linearrings:
lr = OGRGeometry(rr.wkt)
# self.assertEqual(101, lr.geom_type.num)
self.assertEqual('LINEARRING', lr.geom_name)
self.assertEqual(rr.n_p, len(lr))
self.assertEqual(lr, OGRGeometry(rr.wkt))
self.assertNotEqual(lr, prev)
prev = lr
def test_symdifference(self):
"Testing sym_difference()."
for i in range(len(self.geometries.topology_geoms)):
a = OGRGeometry(self.geometries.topology_geoms[i].wkt_a)
b = OGRGeometry(self.geometries.topology_geoms[i].wkt_b)
d1 = OGRGeometry(self.geometries.sdiff_geoms[i].wkt)
d2 = a.sym_difference(b)
self.assertEqual(d1, d2)
self.assertEqual(d1,
a ^ b) # __xor__ is symmetric difference operator
a ^= b # testing __ixor__
self.assertEqual(d1, a)
def test_transform_dim(self):
"Testing coordinate dimension is the same on transformed geometries."
ls_orig = OGRGeometry('LINESTRING(-104.609 38.255)', 4326)
ls_trans = OGRGeometry('LINESTRING(992385.4472045 481455.4944650)',
2774)
prec = 3
ls_orig.transform(ls_trans.srs)
# Making sure the coordinate dimension is still 2D.
self.assertEqual(2, ls_orig.coord_dim)
self.assertAlmostEqual(ls_trans.x[0], ls_orig.x[0], prec)
self.assertAlmostEqual(ls_trans.y[0], ls_orig.y[0], prec)
def test_extent(self):
"Testing `extent` property."
# The xmin, ymin, xmax, ymax of the MultiPoint should be returned.
mp = OGRGeometry('MULTIPOINT(5 23, 0 0, 10 50)')
self.assertEqual((0.0, 0.0, 10.0, 50.0), mp.extent)
# Testing on the 'real world' Polygon.
poly = OGRGeometry(self.geometries.polygons[3].wkt)
ring = poly.shell
x, y = ring.x, ring.y
xmin, ymin = min(x), min(y)
xmax, ymax = max(x), max(y)
self.assertEqual((xmin, ymin, xmax, ymax), poly.extent)
def test_points(self):
"Testing Point objects."
OGRGeometry('POINT(0 0)')
for p in self.geometries.points:
if not hasattr(p, 'z'): # No 3D
pnt = OGRGeometry(p.wkt)
self.assertEqual(1, pnt.geom_type)
self.assertEqual('POINT', pnt.geom_name)
self.assertEqual(p.x, pnt.x)
self.assertEqual(p.y, pnt.y)
self.assertEqual((p.x, p.y), pnt.tuple)
def test_intersection(self):
"Testing intersects() and intersection()."
for i in range(len(self.geometries.topology_geoms)):
a = OGRGeometry(self.geometries.topology_geoms[i].wkt_a)
b = OGRGeometry(self.geometries.topology_geoms[i].wkt_b)
i1 = OGRGeometry(self.geometries.intersect_geoms[i].wkt)
self.assertTrue(a.intersects(b))
i2 = a.intersection(b)
self.assertEqual(i1, i2)
self.assertEqual(i1, a & b) # __and__ is intersection operator
a &= b # testing __iand__
self.assertEqual(i1, a)
def test_closepolygons(self):
"Testing closing Polygon objects."
# Both rings in this geometry are not closed.
poly = OGRGeometry(
'POLYGON((0 0, 5 0, 5 5, 0 5), (1 1, 2 1, 2 2, 2 1))')
self.assertEqual(8, poly.point_count)
with self.assertRaises(GDALException):
poly.centroid
poly.close_rings()
self.assertEqual(
10, poly.point_count) # Two closing points should've been added
self.assertEqual(OGRGeometry('POINT(2.5 2.5)'), poly.centroid)
def test_json(self):
"Testing GeoJSON input/output."
for g in self.geometries.json_geoms:
geom = OGRGeometry(g.wkt)
if not hasattr(g, 'not_equal'):
# Loading jsons to prevent decimal differences
self.assertEqual(json.loads(g.json), json.loads(geom.json))
self.assertEqual(json.loads(g.json), json.loads(geom.geojson))
self.assertEqual(OGRGeometry(g.wkt), OGRGeometry(geom.json))
# Test input with some garbage content (but valid json) (#15529)
geom = OGRGeometry(
'{"type": "Point", "coordinates": [ 100.0, 0.0 ], "other": "<test>"}'
)
self.assertIsInstance(geom, OGRGeometry)
def test_multipoints(self):
"Testing MultiPoint objects."
for mp in self.geometries.multipoints:
mgeom1 = OGRGeometry(mp.wkt) # First one from WKT
self.assertEqual(4, mgeom1.geom_type)
self.assertEqual('MULTIPOINT', mgeom1.geom_name)
mgeom2 = OGRGeometry('MULTIPOINT') # Creating empty multipoint
mgeom3 = OGRGeometry('MULTIPOINT')
for g in mgeom1:
mgeom2.add(g) # adding each point from the multipoints
mgeom3.add(g.wkt) # should take WKT as well
self.assertEqual(mgeom1, mgeom2) # they should equal
self.assertEqual(mgeom1, mgeom3)
self.assertEqual(mp.coords, mgeom2.coords)
self.assertEqual(mp.n_p, mgeom2.point_count)
def verify_geom(self, geom, model_field):
"""
Verify the geometry -- construct and return a GeometryCollection
if necessary (for example if the model field is MultiPolygonField while
the mapped shapefile only contains Polygons).
"""
# Downgrade a 3D geom to a 2D one, if necessary.
if self.coord_dim != geom.coord_dim:
geom.coord_dim = self.coord_dim
if self.make_multi(geom.geom_type, model_field):
# Constructing a multi-geometry type to contain the single geometry
multi_type = self.MULTI_TYPES[geom.geom_type.num]
g = OGRGeometry(multi_type)
g.add(geom)
else:
g = geom
# Transforming the geometry with our Coordinate Transformation object,
# but only if the class variable `transform` is set w/a CoordTransform
# object.
if self.transform:
g.transform(self.transform)
# Returning the WKT of the geometry.
return g.wkt
def test_pickle(self):
"Testing pickle support."
g1 = OGRGeometry('LINESTRING(1 1 1,2 2 2,3 3 3)', 'WGS84')
g2 = pickle.loads(pickle.dumps(g1))
self.assertEqual(g1, g2)
self.assertEqual(4326, g2.srs.srid)
self.assertEqual(g1.srs.wkt, g2.srs.wkt)
def test_from_gml(self):
self.assertEqual(
OGRGeometry('POINT(0 0)'),
OGRGeometry.from_gml(
'<gml:Point gml:id="p21" srsName="http://www.opengis.net/def/crs/EPSG/0/4326">'
' <gml:pos srsDimension="2">0 0</gml:pos>'
'</gml:Point>'),
)
def test_multipolygons(self):
"Testing MultiPolygon objects."
OGRGeometry('POINT(0 0)')
for mp in self.geometries.multipolygons:
mpoly = OGRGeometry(mp.wkt)
self.assertEqual(6, mpoly.geom_type)
self.assertEqual('MULTIPOLYGON', mpoly.geom_name)
if mp.valid:
self.assertEqual(mp.n_p, mpoly.point_count)
self.assertEqual(mp.num_geom, len(mpoly))
msg = 'Index out of range when accessing geometry in a collection: %s.'
with self.assertRaisesMessage(IndexError, msg % len(mpoly)):
mpoly.__getitem__(len(mpoly))
for p in mpoly:
self.assertEqual('POLYGON', p.geom_name)
self.assertEqual(3, p.geom_type)
self.assertEqual(mpoly.wkt, OGRGeometry(mp.wkt).wkt)
def test_multilinestring(self):
"Testing MultiLineString objects."
prev = OGRGeometry('POINT(0 0)')
for mls in self.geometries.multilinestrings:
mlinestr = OGRGeometry(mls.wkt)
self.assertEqual(5, mlinestr.geom_type)
self.assertEqual('MULTILINESTRING', mlinestr.geom_name)
self.assertEqual(mls.n_p, mlinestr.point_count)
self.assertEqual(mls.coords, mlinestr.tuple)
self.assertEqual(mlinestr, OGRGeometry(mls.wkt))
self.assertNotEqual(mlinestr, prev)
prev = mlinestr
for ls in mlinestr:
self.assertEqual(2, ls.geom_type)
self.assertEqual('LINESTRING', ls.geom_name)
msg = 'Index out of range when accessing geometry in a collection: %s.'
with self.assertRaisesMessage(IndexError, msg % len(mlinestr)):
mlinestr.__getitem__(len(mlinestr))
def test_polygons_templates(self):
# Accessing Polygon attributes in templates should work.
engine = Engine()
template = engine.from_string('{{ polygons.0.wkt }}')
polygons = [
OGRGeometry(p.wkt) for p in self.geometries.multipolygons[:2]
]
content = template.render(Context({'polygons': polygons}))
self.assertIn('MULTIPOLYGON (((100', content)
def test_linestring(self):
"Testing LineString objects."
prev = OGRGeometry('POINT(0 0)')
for ls in self.geometries.linestrings:
linestr = OGRGeometry(ls.wkt)
self.assertEqual(2, linestr.geom_type)
self.assertEqual('LINESTRING', linestr.geom_name)
self.assertEqual(ls.n_p, linestr.point_count)
self.assertEqual(ls.coords, linestr.tuple)
self.assertEqual(linestr, OGRGeometry(ls.wkt))
self.assertNotEqual(linestr, prev)
msg = 'Index out of range when accessing points of a line string: %s.'
with self.assertRaisesMessage(IndexError, msg % len(linestr)):
linestr.__getitem__(len(linestr))
prev = linestr
# Testing the x, y properties.
x = [tmpx for tmpx, tmpy in ls.coords]
y = [tmpy for tmpx, tmpy in ls.coords]
self.assertEqual(x, linestr.x)
self.assertEqual(y, linestr.y)
def test_srs_transform(self):
"Testing transform()."
orig = OGRGeometry('POINT (-104.609 38.255)', 4326)
trans = OGRGeometry('POINT (992385.4472045 481455.4944650)', 2774)
# Using an srid, a SpatialReference object, and a CoordTransform object
# or transformations.
t1, t2, t3 = orig.clone(), orig.clone(), orig.clone()
t1.transform(trans.srid)
t2.transform(SpatialReference('EPSG:2774'))
ct = CoordTransform(SpatialReference('WGS84'), SpatialReference(2774))
t3.transform(ct)
# Testing use of the `clone` keyword.
k1 = orig.clone()
k2 = k1.transform(trans.srid, clone=True)
self.assertEqual(k1, orig)
self.assertNotEqual(k1, k2)
prec = 3
for p in (t1, t2, t3, k2):
self.assertAlmostEqual(trans.x, p.x, prec)
self.assertAlmostEqual(trans.y, p.y, prec)