[GRASS-user] r.basin does not complete properly on one stream [RESOLVED]

[Rich Shepard]

On Thu, 25 Oct 2012, Rich Shepard wrote:

>  For a reason I've not been able to determine in a long day today r.basin
> fails to properly complete when passed easting/northing coordinates of a
> cell generated by r.stream.extract. The last three ratios are shown as NAN
> and the area is shown as only 4km^2 when it's actually much larger. With
> other sub-basins this result was corrected by moving the outlet point
> further upstream from the confluence with a larger stream.

   For 5 of 7 sub-basins applying a threshold of 7500 to r.basin worked fine.
For the other two, adjacent with nearby outlets, the threshold needs to be
reduced to 2500 to have r.basin run to completion and produce two separate
basins without overlap.

   Problem resolved.

Rich