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ST_MinimumBoundingRadius

ST_MinimumBoundingRadius
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Name

ST_MinimumBoundingRadius — Returns the center point and radius of the smallest circle that contains a geometry.

Synopsis

(geometry, double precision) ST_MinimumBoundingRadius ( geometry geom ) ;

Description

Computes the center point and radius of the smallest circle that contains a geometry. Returns a record with fields:

  • center - center point of the circle

  • radius - radius of the circle

Use with ST_Collect to get the minimum bounding circle of a set of geometries.

To compute two points lying on the minimum circle (the "maximum diameter") use ST_LongestLine .

Availability - 2.3.0

Examples 

SELECT ST_AsText(center), radius FROM ST_MinimumBoundingRadius('POLYGON((26426 65078,26531 65242,26075 65136,26096 65427,26426 65078))');

                st_astext                 |      radius
------------------------------------------+------------------
 POINT(26284.8418027133 65267.1145090825) | 247.436045591407