That is certainly an option but the collecting of the heat map data is really the question.
I saw this http://stackoverflow.com/questions/8798711/solr-using-facets-to-sum-documents-based-on-variable-precision-geohashes but don't have a really good understanding of how this would be accomplished. I need to get a more firm understanding of geohashes as my understanding is extremely lacking at this point. On Mon, Jun 11, 2012 at 8:55 AM, Stefan Matheis <matheis.ste...@googlemail.com> wrote: > I'm not entirely sure, that it has to be that complicated .. what about using > for example http://www.patrick-wied.at/static/heatmapjs/ ? You could collect > all the geo-related data and do the (heat)map stuff on the client. > > > > On Sunday, June 10, 2012 at 7:49 PM, Jamie Johnson wrote: > >> 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. > > >
