We currently plot temperatures on Google maps. ([url removed, login to view])
At certain predefined zoom levels we want an transparent overlay similar to a heatmap instead of the plotted temperatures.. See [url removed, login to view] for an example. The overlay must be more detailed and more nice looking than [url removed, login to view] version.
Data source is an xml-file with temperatures and coordinates.
The finished temperature overlay must be implemented on our current site - our current Google maps (api v3) solution must be rewritten/modified to support the temperature overlay.