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 / catography, chloropleths, google, google-maps, graphs, heatmaps, infographics, mapping, maps, piecharts, visualisation