Roadmap for turning Semantic Mediawiki into a full Semantic GIS
Sounds very interesting and should be doable. I got interested in geo-coded data a while ago and tried to build an ad-hoc system to query and display them. I did something much more basic as you describe (not PostGIS) storing geo-coded data sets with several thousand entries on one page as multi-valued properties (although in practice to fetch all the data every time from the SMW database is much too slow so the data are cached as tables in files to be read quicker as long as the cache is valid, which is no problem as my data are more or less static). The display is via an #ask query and the Exhibit query result format either from one data set or from several ones combined. It allows various different types of overlays to be added to the map and the usual data filtering via the exhibit facets/views. However, it's all very customized to deal with the large number of data points and other specific problems with the data sets I use, so all of the extensions are modified. Cheers, Gu
