I am learning GIS for use in hydrologic analysis. Related to computation of overland flow there are two types of slope that I would like to be able to obtain from GIS. The first is average slope for a given polygon area. The second for the same polygon area is an AREA-Weighted average slope. Presumably one would need to divide the polygon into subareas based on a slope-range (say 0-2%, 2%-4%, 4% -10%, etc) then compute a weighted average.
Is there a plugin that will provide this information, . . . or am I at the point where I need to learn how to write a python script?
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Is there a plugin that will provide this information, . . . or am I at the point where I need to learn how to write a python script?
أكثر...