Checks if the LineString is a ring. Returns 1 if the LineString is both closed (start equals end) and simple (no self-intersection).
ST_IsRing(g)
IsRing(g)Returns true if a given LINESTRING is a ring, that is, both ST_IsClosed and ST_IsSimple. A simple curve does not pass through the same point more than once. However, see .
St_IsRing() and IsRing() are synonyms.
This page is licensed: CC BY-SA / Gnu FDL