Visualization of the temporal dimension in multimedia presentations of spatial phenomena

Technological evolution has paved the way for a variety of small dynamic maps. The increasing use of the Internet and WWW has played a major role in the dissemination of map applications. Interactive map animations open a new way of thinking when visualizing spatial data. This paper focuses on the presenta-tion of the temporal dimension of spatial phenomena on dynamic maps. The proposed methods are discussed in the light of how people perceive time, and are modelled on the basis of theory for common visual variables in cartography. Multimedia presentations are not limited to graphic visualization. The audio-channels on a modern computer can impart useful information by sounds in interaction with the graphic display .