Christian, thank you for answering. My problem is that I don't want to use the slope map to get slope, bu i want to calculate it as the ratio between the difference of the elevation and the distance between two given points (pixels). To do that, I need to get the coordinates of the points as a input file for r.profile.
Margherita 2010/6/2 Christian Schwartze <[email protected]> > Why are you not using r.statistics, since it takes one base map (your > path as a raster) and another map containing data you want to analyze (your > slope). With the "average" option/method you will get the desired result, if > I understand you correctly... > > Christian. > > *From:* Margherita Di Leo <[email protected]> > *Sent:* Wednesday, June 02, 2010 6:17 PM > *To:* [email protected] > *Subject:* [GRASS-user] get coords from a raster > > Hi List, > > I'm trying to make a script to calculate the slope along a path. I want to > calculate the slope as the average of cell per cell slope. For my purpose I > found r.profile to produce the input file for my script, but I have to give > it the coordinates of the points. As I have a raster and not a vector, I was > wondering if is there a non interactive way like a d.where or something like > that, that i can use for my purpose. I mean, i have a raster in which there > is the path i'm interested in, and the other cells are null. > > Thank you in advance > > Margherita > > ------------------------------ > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user >
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