Advanced Legends for Interactive Dynamic Maps

Electronic media opens for many interesting possibilities when it comes to the presentation of phenomena that changes by over time. In a dynamic presentation of such phenomena, the symbols in the map may change during the animation and make it more difficult for the map reader use keep track of the information and compare it with the legend. This paper looks closer into methods for extended use of the legends on thematic maps. It shows how legends can split and moved around in the application to make it easier for the map reader to compare values in the legend with the symbols on the map. At the same time, operations in the map can be controlled by the legends.