Here are some code samples to demonstrate using the Google Visualization API. Table Example Customized Table Example Gauge Example Interaction Example Full HTML Page Example Query Wrapper Example Table Query Wrapper Example Mouseover Tool Tip Example
Hedonometer.org is an instrument that measures the happiness of large populations in real time. The hedonometer is based on people’s online expressions, capitalizing on data-rich social media, and measures how people present themselves to the outside world.
Philipp Heim, Jürgen Ziegler, and Steffen Lohmann. Proceedings of the International Workshop on Interacting with Multimedia Content in the Social Semantic Web (IMC-SSW 2008), volume 417 of CEUR Workshop Proceedings, page 49--58. Aachen, (2008)