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. Protovis is free and open-source, provided under the BSD License .
Infographics can be a great way to quickly reference information. Instead of pouring over figures and long reports to decipher data, an infographic can immediately make apparent exactly what a dataset actually means . Below are more than 25 infographics that can be useful to web designers. Some are incredibly practical, some provide information that might be of interest to designers and some just present data that might be interesting to those who design websites all day. If you know of any good ones that we may have missed, please add them in the comments section below. 1.