Active Legends For Interactive Cartographic Animation

Short Description
cartographic animation developed with JavaScript is evaluated for functionality and …. mortality data for 1996 were used for the JavaScript animation. …

Website: maps.unomaha.edu | Filesize: 69kb

Content
Active Legends
For
Interactive Cartographic Animation
Prof. Michael P. Peterson
Department of Geography / Geology
University of Nebraska at Omaha
Omaha, NE 68182 USAActive Legends for Interactive Cartographic Animation Peterson
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Abstract
Active legends in cartographic animation serve the dual purpose of controlling the
display of a map sequence and providing necessary information about the individual frames.
Legends for cartographic animations have typically been implemented in a non-interactive form
as individual legends that are synchronized with the display of the map. An active legend
creates a tactual/visual association between the individual maps in the animation and what they
depict. The development of more interactive cartographic animations is a function of both the
available technology and the operational metaphors that make the technology accessible. The
Web is providing a means to distribute interactive animations. A particular interactive
cartographic animation developed with JavaScript is evaluated for functionality and content.
Keywords: cartographic animation, interaction, JavaScript
I. Introduction
Interaction is now incorporated in all forms of mapping, whether with a database of a
geographic information system, a multimedia atlas on a CD-ROM, or street maps on the World
Wide Web. All of these forms of mapping share the characteristic that the user has control
over the resultant map. Cartographic animation, on the other hand, is usually implemented in a
more passive way…