2
votes
0answers
42 views

Thematic mapping [closed]

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.
3
votes
1answer
2k views

How can GeoJson polygons be colored programmatically using 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 ...
5
votes
1answer
630 views

Is dynamically generating Choropleth maps a solved problem?

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 ...