>I'm a bit confused about r.drain (I'm working with Debian's backport version >6.2.1). I have noticed that if you give as input in the "coordinate" >parameter a point that stands on the region's edge, r.drain won't "move" >from there: it would output a map with that same single point. Is this a >bug? >On the other hand I can't understand why in the man page the section >entitled BUG says: "r.drain currently finds only the lowest point (the cell >having the smallest category value) in the input file that can be reached >through directly adjacent cells that are less than or equal in value to the >cell reached immediately prior to it; therefore, it will not necessarily >reach the lowest point in the input file. It currently finds pits in the >data, rather than the lowest point present.". Why would a local search be a >bug in this case? I think it should be like that by design... >I'm not too sure my understanding is correct. What do you think? >Thanks a lot in advance, >Stefano.
My short answer is I don't know; but I can try to have a look at the module and try to figure out what is happening...I've never used it before, so it will take some trial-and-error to figure. Alternatively, if anyone listening is familiar with r.drain and can previde some hints, I'll certainly update the manpage. ~ Eric. _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user