ST_DIMENSION
Syntax
ST_Dimension(g) Dimension(g)
Description
Returns the inherent dimension of the geometry value g
. The result can
be
Dimension | Definition |
---|---|
-1 | empty geometry |
0 | geometry with no length or area |
1 | geometry with no area but nonzero length |
2 | geometry with nonzero area |
ST_Dimension()
and Dimension()
are synonyms.
Examples
SELECT Dimension(GeomFromText('LineString(1 1,2 2)')); +------------------------------------------------+ | Dimension(GeomFromText('LineString(1 1,2 2)')) | +------------------------------------------------+ | 1 | +------------------------------------------------+
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