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_perimeter() double geom_perimeter ( const GSERIALIZED *  gs ) Return the perimeter of a geometry. Defined by perimeter(point) = 0 perimeter(line) = 0 perimeter(polygon) = sum of ring perimeters Uses Euclidian 2D computation even if input is 3D Parameters [in] gs Geometry Note PostGIS function: LWGEOM_perimeter2d_poly(PG_FUNCTION_ARGS)