ST_MinimumBoundingCircle accepts the geometry type, i.e. planar geometry. Is there any way to get the minimum bounding circle of a geography collection using PostGIS? That is, the minimum bounding circle of a collection of features on the sphere. Simply converting a geography to a geometry and the resulting bounding circle back to geography does not create an accurate result. This guy (via https://observablehq.com/@fil/spherical-smallest-circle-problem) seems to have it worked out in JavaScript by
Going forward (to the stereographic plane), we compute the circumcenter of three projected points on each circle. Going backward, we use d3-geo-voronoi to retrieve the enclosing circle’s center.
Is there any built-in way to do this on PostGIS or achieve the same result using equivalent functions?
