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Returns a linestring spanning minimum and maximum values of each dimension of the given geometry’s coordinates as its start and end point respectively. If an empty geometry is provided, the returned LineString is also empty. If a single vertex (POINT) is provided, the returned LineString has both the start and end points same as the points coordinates ST_BoundingDiagonal

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Signatures

ST_BoundingDiagonal(geom: Geometry)

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Parameters

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geom
Geometry
required
The input geometry.

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Return type

The resulting geometry.

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Example

SELECT ST_BoundingDiagonal(ST_GeomFromWKT(geom))
Input: POLYGON ((1 1 1, 3 3 3, 0 1 4, 4 4 0, 1 1 1)) 
LINESTRING Z(0 1 1, 4 4 4)
Input: POINT (10 10) 
LINESTRING (10 10, 10 10)
Input: GEOMETRYCOLLECTION(POLYGON ((5 5 5, -1 2 3, -1 -1 0, 5 5 5)), POINT (10 3 3)) 
LINESTRING Z(-1 -1 0, 10 5 5)