def _force_2d(geom):
""" https://groups.google.com/d/msg/django-users/7c1NZ76UwRU/xEAir0dUCQAJ """
wkt_w = WKTWriter()
wkt_w.outdim = 2
geom_3d = GEOSGeometry(geom.wkt)
temp = wkt_w.write(geom_3d)
geom_2d = GEOSGeometry(temp)
if geom_2d and isinstance(geom_2d, Polygon) is True:
geom_2d = MultiPolygon(geom_2d)
return geom_2d
def _strip_z_values(features):
for feature in features:
writer = WKTWriter()
writer.outdim = 2 # force features into 2 dimensions
feature.multipolygon = GEOSGeometry(writer.write(feature.multipolygon))
return features
def convert_3d_to_2d(self, shape_3d):
wkt_w = WKTWriter()
wkt_w.outdim = 2
temp = wkt_w.write(shape_3d)
return GEOSGeometry(temp)
