Thematic Google Maps
A thematic map is one where regions are coloured according to some statistic, for instance unemployment rate or the population density.
Here is a way to generate your own google maps with thematic overlays, log in with demo/demo.
The data is currently random, I will make it possible to upload your own datasets. I described the origins of this web application last year, its based on Richard Milton’s Google Map Creator, but my version lets you do it with a web browser.
The finished map tiles could be made available as a zip file, but at present they are just left on my server.
The application is a mixture of Ruby on Rails (which processes the ESRI shape files) and a Struts java application that calls Richard’s clever code.