What is the best way to develop thematic maps? I would like to generate pie charts and fill polygons with different colors depending on a parameter value. I'm working with ExtJS 4.2 and OpenLayers.
I'm experimenting with dynamically setting the color values of a geojson polygon. In my geojson file, there is an attribute for each polygon called pop_den. I am trying to update the fillcolor of the ...
I am trying to work out what mapping tools I would need to use to dynamically create Choropleth maps from our data. I am working on a project where the backend is a big database of statistics, and ...