geo_is_empty geo_typename geog_area geog_centroid geog_length geog_perimeter geom_azimuth geom_length geom_perimeter line_numpoints line_point_n

geom_length() double geom_length ( const GSERIALIZED *  gs ) Return the length of a geometry. Defined by length(point) = 0 length(line) = length of line length(polygon) = 0 – could make sense to return sum(ring perimeter) Uses Euclidean 3D/2D length depending on input dimensions. Parameters [in] gs Geometry Note PostGIS function: LWGEOM_length_linestring(PG_FUNCTION_ARGS)