Simon Willison’s Weblog

Cartographer.js. “Thematic mapping for Google Maps”—which means an easy way of adding heat maps (aka chloropleths), pie charts and point clusters as a layer over a Google map.

# 1st November 2009, 1:20 pm / google-maps, google, catography, maps, mapping, heatmaps, piecharts, graphs, infographics, visualisation, chloropleths