[Qgis-developer] [Qgis-user] Using/visualizing 3D data (Z values)

[gene]

The problem is that Shapely is based on GEOS and GEOS isn't a 3D library at
all. *The z of the geometries are not considered during any spatial
operations but you can use matplotlib to represent the 3D geometry*

>>> from shapely.geometry import Point
>>> p = geometry.Point(1,2,3)
>>> list(p.coords)
[(1.0, 2.0, 3.0)]
>>> p.has_z
True
>>> p.z
3.

*and wkt et wkb formats do not recognize the z value*
>>> p.wkt
'POINT (1.0000000000000000 2.0000000000000000)'

*The geo_interface format (GeoJson), yes*
>>> from shapely.geometry import mapping, shape
>>> p.__geo_interface__
{'type': 'Point', 'coordinates': (1.0, 2.0, 3.0)}






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