I had a request from a customer which to this point I have not seen
much similar so I figured I'd pose the question here. I've been asked
if it was possible to build a heat map from the results of a query. I
can imagine a process to do this through some post processing, but
that sounds very expensive for large/distributed indices so I was
wondering if with all of the new geospatial support that is being
added to lucene/solr there was a way to do geospatial faceting. What
I am imagining is bounding box being defined and that box being broken
into an N by N matrix, each of which would return counts so a heat map
could be constructed. Any other thoughts on this would be greatly
appreciated, right now I am really just fishing for some ideas.
