Has anyone successfully created a heat map of the world countries using Google map? I read in few places that its possible but cannot seem to find the correct way to do it. I need to create a heat map showing world countries base on each country's unemployment rate. Some alike this swine flu map: Swine flu heat map: http://www.imapbuilder.com/customization/samples.php?sampleid=swine-influenza However I would prefer a Google Map solution as I also need to zoom into country / state level, is there a Google map plug-in available for such purpose?
There appears to be 2 ways of doing it... Check out: http://geochalkboard.wordpress.com/2009/03/11/density-mapping-in-google-maps-with-heatmapapi/ for the first method, and: http://ouseful.wordpress.com/2008/08/18/olympic-medal-table-map/ for the second... Best of luck!