This topic describes the ST_Volume and ST_3DVolume functions. These functions calculate the volume of a closed 3D object.
Syntax
float8 ST_Volume(meshgeom geom);
float8 ST_Volume(sfmesh sfmesh);Parameters
| Parameter | Description |
|---|---|
| geom | The meshgeom object. |
| sfmesh | The sfmesh object. |
Description
- These functions calculate the volume of a closed 3D object.
- The volume of a point, linestring, or polygon is 0.
- If the geom parameter is invalid, NULL is returned.
- If the 3D model is not closed, NULL is returned.
Examples
select ST_Volume('MESHGEOM(PATCH(TRIANGLESTRIP Z(0 0 0,0 10 0,0 0 10,10 0 0,0 0 0), TRIANGLE Z( 0 0 0,0 10 0,10 0 0)))'::mesh);
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