On Tue, 23 Feb 2010, Markus Metz wrote:
Almost right. ...with surface flow accumulation between 0 and the threshold value.
Markus, Now I understand, yet still miss the difference between the accumulation map and the visual map.
All flow accumulation values larger than the threshold value are set to the threshold value.
Got that from the man page.
Number of cells draining through a given cell. Converted to squared map units by multiplying with nsres * ewres, of the flow accumulation map of course, and first setting the computational region to match the flow accumulation map with g.region -p rast=<my_flow_acc>. -p to check that everything is all right.
I assume that the above calculation is left for me to do; that the module does not do the math before displaying the results. Am I correct in my assumption? One last point: why no color in the legend? There is color on the visual map but not on the accompanying legend. Strange and I don't know how to fix this. Many thanks, Rich _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
