Date Added: Dec 2010
The authors describe a meta-notation devised to express the major structural characteristics in widely-used data visualizations. The meta-notation consists of unary and binary operators that can be combined to represent a visualization. Capturing structural features of a visualization, the meta-notation can be applied to match or compare two visualizations at a conceptual level. For example, a user's request for a visualization can be compared with visualization tools' presentation capabilities. The design of the operators is discussed as they present their underlying concepts and show examples of their use.