We use actor hierarchies to organize the different users of a system. Different people play different roles, and thus do different jobs. We use different actors to identify and organize those people. When deploying a system globally, we usually discover people that do the same jobs, but do them differently. […]
Interface Design: Visualization Methods
Visualizing complex data can be very difficult. There are almost as many ways to visualize data as there are data to visualize. The Ralph Lengler and Martin J. Eppler at the Visual Literacy Organization collect many of them for us in a periodic table.