Returns the minimum Y coordinate of the bounding box of a geometry, Box2D, or Box3D object.
Syntax
float ST_YMin(box3d aGeomorBox2DorBox3D);Parameters
| Parameter | Description |
|---|---|
| aGeomorBox2DorBox3D | The Box2D, Box3D, or geometry object. |
Usage notes
The function signature accepts only Box3D. However, ST_YMin auto-casts Box2D and geometry objects at runtime. String representations of Box2D or geometry objects are not auto-cast and therefore cannot be processed.
ST_YMin supports 3D objects and preserves Z coordinates.
ST_YMin supports circular strings and curves.
Examples
Get the minimum Y coordinate of a LineString:
SELECT ST_YMin('LINESTRING(0 1,2 3)'::geometry);
st_ymin
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