Output Media Adapted Cartographic Visualisation

In modern cartography of the late twentieth century, the Internet offers an ideal platform for the communication via maps. The map graphics pose as an essential part of the graphical user interface in atlas information systems (AIS) that enables the user to investigate the underlying data. Existing AIS largely deal with functionalities, but often do not concentrate on visualisation aspects. The solutions vary from simple line graphics with hardly any cartographic characteristics to systems that are based on scanned maps, ignoring the technical restrictions of the screen as an output medium. So the authors are searching for high-class AIS which should rely on cartographically improved map graphics suitable for both, screen visualisation and high-quality printing. Using legible map graphics which are adapted to the technical requirements of the output medium is one of the main criteria for user acceptance. Concerning the definition of characteristic sheets for printed maps, much experience has been gained within the last few decades. The situation is not the same for screen visualisation. Due to their technical restrictions, screen presentations suffer from deformations of the graphic elements. In order to produce legible maps, the map graphics have to be adapted to the screen