wkt syntax (howto)

Geometry types and their text representations

Geometry type	WKT representation	Comment
point	POINT EMPTY	empty point
point	POINT ( 10.05 10.28 )	point
point	POINT Z( 10.05 10.28 2.51 )	point with Z coordinate
point	POINT M( 10.05 10.28 4.72 )	point with M coordinate
point	POINT ZM( 10.05 10.28 2.51 4.72 )	point with Z coordinate and M coordinate
linestring	LINESTRING EMPTY	empty linestring
polygon	POLYGON (( 10 10, 10 20,20 20, 20 15, 10 10))	polygon
multipoint	MULTIPOINT Z(10 10 2, 20 20 3)	multipoint with Z coordinates
multilinestring	MULTILINESTRING M(( 310 30 1, 40 30 20, 50 20 10 )( 10 10 0, 20 20 1))	multilinestring with M coordinates
multipolygon	MULTIPOLYGON ZM((( 1 1 1 1, 1 2 3 4, 2 2 5 6, 2 1 7 8, 1 1 1 1 )))	multipolygon with Z coordinates and M coordinates