Are there any standard spatial composition operators people use for PG's
polygon and path data types? That is, it seems there ought to be
extenders of the signatures,
polygon <- polygon %+% (point, vertex-number)
path <- path %+% (point, node-number)
where the right-hand-sided point is the new point, and the vertex-number
or node-number tell where to put it. This function might be an
update-in-place.
I saw nothing like this in the PG docs, but I figured people probably
made such things up. Any pointers? Anyone willing to share their
favorites online some place?
TIA,
- Jan