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| |
| # ST_PointOnSurface |
| |
| Introduction: Returns a POINT guaranteed to lie on the surface. |
| |
|  |
| |
| Format: `ST_PointOnSurface(A: Geometry)` |
| |
| Return type: `Geometry` |
| |
| Since: `v1.2.1` |
| |
| Examples: |
| |
| ``` |
| SELECT ST_AsText(ST_PointOnSurface(ST_GeomFromText('POINT(0 5)'))); |
| st_astext |
| ------------ |
| POINT(0 5) |
| |
| SELECT ST_AsText(ST_PointOnSurface(ST_GeomFromText('LINESTRING(0 5, 0 10)'))); |
| st_astext |
| ------------ |
| POINT(0 5) |
| |
| SELECT ST_AsText(ST_PointOnSurface(ST_GeomFromText('POLYGON((0 0, 0 5, 5 5, 5 0, 0 0))'))); |
| st_astext |
| ---------------- |
| POINT(2.5 2.5) |
| |
| SELECT ST_AsText(ST_PointOnSurface(ST_GeomFromText('LINESTRING(0 5 1, 0 0 1, 0 10 2)'))); |
| st_astext |
| ---------------- |
| POINT Z(0 0 1) |
| |
| ``` |
