DuckDB function ST_Expand

Expand the input geometry by the specified distance, returning a polygon.

geom is the input geometry.

distance is the target distance for the expansion, using the same units as the input geometry.

This is a planar operation and will not take into account the curvature of the earth.

Usage

ST_Expand(geom, distance)

Arguments

geom

GEOMETRY

distance

DOUBLE

Value

GEOMETRY

Provided by

The spatial extension (LOAD spatial;).

SQL examples

SELECT ST_AsText(ST_Expand(ST_GeomFromText('POINT(20 30)'), 0.1));