"Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for visualization, Protovis defines marks through dynamic properties that encode data, allowing inheritance, scales and layouts to simplify construction." from http://vis.stanford.edu/protovis/
More about Protovis:
Protovis | The homepage of Protovis. |
Gallery | Gallery of Protovis. |
Documentation | Documentation of Protovis. |