A comparison of manual and automated slope maps

The authors propose an automated method of generating slope maps. Starting from a topographical map, a Digitized Terrain Model is build up and completed with a morphological matrix. By determining the representative slope for each grid cell an impression of the geographical distribution of the different slope values is obtained. In two test areas in Dry Hesbaye (E. Belgium), where the results were compared with a detailed manually constructed slope map, the applicability and advantages of the method for general purposes are demontrated.