Google provides a Charting API with a host of useful charts. I spent a few minutes playing around with the map chart section to create a color-coded map of the states I have visited in the USA.
The Venn Diagram was an interesting option that I had not expected, but good stuff.
If you are building a dashboard, the Google-o-meter might come in handy
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.
