PostGIS ST_ForceLHR Prev 7.21. SFCGAL Functions Next Name ST_ForceLHR — Force LHR orientation Synopsis geometry +`*`+ST_ForceLHR*(`geometry `geom`)`; Description Availability: 2.1.0 This method needs SFCGAL backend. This function supports 3d and will not drop the z-index. This function supports Polyhedral surfaces. This function supports Triangles and Triangulated Irregular Network Surfaces (TIN). Prev Up Next ST_Extrude Home ST_IsPlanar