PROGRAMMING THE CALCULATION OF SLOPE IN SIG BY THE ORTHOGONAL VECTOR METHOD
DOI:
https://doi.org/10.26512/2236-56562002e39681Keywords:
geoprocessing, algorithm, slope angleAbstract
This research shows an evaluation of the vector calculation applied to the development of a slope angle mapping program. This method is based on the vector sum of slope orthogonal components, quantified through moving windows. The orientations of the retangular axes systems and the estimate methods of the slope components were evaluated in relation to manual measurements. The best correlation was found when choosing the maximum results between the orientations and the maximum height in each windowed direction. All modes of the vector approach worked better than the calculation available in the geographical information system. High slopes were poorly estimated by all methods.
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