Hello everybody, 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.
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