I am creating some isochrones in pgrouting based upon a table from
osm2po. Now I have a query that will get all of the edges that are
c driving distance away from a point. How can I save this query or these individual isochrones into a table of polygons?
Perhaps a little background might help: I want to show how the isochrones change over time as different events occur or as event intensities change. So I wanted to be able to create a video that shows how the contours of the isochrones changes over time. Hence I need to create a table that has each isochrone polygon, as well as a timestamp for the date.
Any help you can provide in converting the isochrones into polygons — hopefully in PostGIS — is welcome.