Hello,
I would like to know the difference between the output "direction" in r.terraflow and the output map "drainage" in r.watershed. I wanted to run r.water.outlet and its input is "drainage", which can be obtained by r.watershed. However, r.watershed takes much more time to run than r.terraflow.
I tried r.water.outlet, inputing "direction", obtained from r.terraflow, and it didn't work.
I also tried inputing the "direction" raster map that I obtained from r.fill.dir, and didn't work.
The result obtained when I say "didn't work" was a raster full of zeros.
As I am a beginner I may have done something wrong before, so I would like to know more about it before proceeding.
Thank you for the help,
--
José Miguel Delgado
jmmd@mega.ist.utl.pt
+351 96 640 72 09
+46 73 573 23 89