Le mercredi 17 avril 2013 04:08:02, Mike Toews a écrit : > With the Python module for GDAL 1.9.2 for Python 2.7, Windows 64-bit, > downloaded from http://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal I see > this oddness: > > from osgeo import ogr > for name in dir(ogr): > if name.startswith('wkb'): > i = getattr(ogr, name) > print('%s : %d : %r' % (name, i, ogr.GeometryTypeToName(i))) > > wkb25Bit : -2147483648 : 'Unknown (any)' > wkb25DBit : -2147483648 : 'Unknown (any)' > wkbGeometryCollection : 7 : '3D Geometry Collection' > wkbGeometryCollection25D : -2147483641 : 'Geometry Collection' > wkbLineString : 2 : '3D Line String' > wkbLineString25D : -2147483646 : 'Line String' > wkbLinearRing : 101 : 'Unrecognised: 101' > wkbMultiLineString : 5 : '3D Multi Line String' > wkbMultiLineString25D : -2147483643 : 'Multi Line String' > wkbMultiPoint : 4 : '3D Multi Point' > wkbMultiPoint25D : -2147483644 : 'Multi Point' > wkbMultiPolygon : 6 : '3D Multi Polygon' > wkbMultiPolygon25D : -2147483642 : 'Multi Polygon' > wkbNDR : 1 : '3D Point' > wkbNone : 100 : 'None' > wkbPoint : 1 : '3D Point' > wkbPoint25D : -2147483647 : 'Point' > wkbPolygon : 3 : '3D Polygon' > wkbPolygon25D : -2147483645 : 'Polygon' > wkbUnknown : 0 : '3D Unknown (any)' > wkbXDR : 0 : '3D Unknown (any)' > > A few observations: > > - The 2D geometries (e.g. wkbLineString) are reported as 3D > geometries by ogr.GeometryTypeToName(), but this is false. > Furthermore, other OGR documents refer to these geometries as so > called 2.5D geometries, and not true 3D geometries. > > - The 2.5D geometries (e.g. wkbLineString25D) are simply reported as > their geometry type, and no mention of dimensions. > > It seems the "3D " name prepending logic is reversed.
Known issue : see http://trac.osgeo.org/gdal/ticket/4871 > > -Mike > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
