I am working with point clusters and want to create the rough shape of the cluster in the form of a polygon using
ST_ConvexHull(). I'm having problems with single outliers though, as they don't convert to a polygon but to a
SELECT ST_AsText(ST_ConvexHull(ST_Collect(point))) ... POLYGON((13.01741532 52.40118295,13.382100866593 52.516280103729, ...)) POINT(12.5 51.5)
Is there a way to force small geometries (single or double points) into a polygon? I want to simplify the subsequent processing by guaranteeing polygons; accuracy is not a high priority in this case, making a minimal triangle out of a single point is fine, even if not exact.