ST_MaximumInscribedCircle

Finds the largest circle that is contained within a (multi)polygon, or which does not overlap any lines and points. Returns a row with fields:

center - center point of the circle
nearest - nearest point from the center of the circle
radius - radius of the circle

For polygonal geometries, the function inscribes the circle within the boundary rings, treating internal rings as additional constraints. When processing linear and point inputs, the algorithm inscribes the circle within the convex hull of the input, utilizing the input lines and points as additional boundary constraints.

Signatures

ST_MaximumInscribedCircle(geometry: Geometry)

Parameters

geometry

Geometry

required

The input geometry.

Return type

A struct containing the result fields.

Example

SELECT inscribedCircle.* FROM (
    SELECT ST_MaximumIncribedCircle(ST_GeomFromWKT('POLYGON ((62.11 19.68, 60.79 17.20, 61.30 15.96, 62.11 16.08, 65.93 16.95, 66.20 20.61, 63.08 21.43, 64.48 18.70, 62.11 19.68))')) AS inscribedCircle
)

+---------------------------------------------+-------------------------------------------+------------------+
|center                                       |nearest                                    |radius            |
+---------------------------------------------+-------------------------------------------+------------------+
|POINT (62.794975585937514 17.774780273437496)|POINT (63.36773534817729 19.15992378007859)|1.4988916836219184|
+---------------------------------------------+-------------------------------------------+------------------+

ST_LabelPoint

ST_MinimumBoundingCircle

⌘I

Wherobots Cloud REST API

WherobotsDB

Vector tiles (PMTiles)

Havasu (Iceberg) table management

GeoStats and Map Matching

Rasterflow

ST_MaximumInscribedCircle

Signatures

Parameters

Return type

Example

​Signatures

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​Example

Signatures

Parameters

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Example