[OSM-talk] OT: making heat maps and overlaying on OSM data

[Tom Chance]

Hi,

I've been asked about representing some data on CO2 emissions at various 
coordinates on a heat map of Cambridge. There's also the possibility of doing 
this with a web interface, which I thought could just as well be OpenLayers 
with the OSM tiles.

Can anyone give me any tips on how to take a simple table of data with a figure 
for each coordinate, and turn it into a heat map? At first I thought of 
GeoCommons but it seems you can only use pre-processed data with their Maker 
tool.

Regards,
Tom