On Mon, 3 Oct 2016, Helmut Kudrnovsky wrote:

please test the sample from the manual with the NC sample data set [1],
then follow the example workflow with your data and report the results and
the used commands (g.region, r.watershed, r.water.outlet).

Helmut,

  Yes, that works here, too. Of course, my data also worked until yesterday
afternoon and why it now fails is what I need to discover.

  In the NC data set from mapset user1 I selected 'elevation' as input to
r.watershed and 'drainage' as output. For r.water.outlet the input was
'drainage,' the output 'watershed,' and the coordinates a point I selected
that looked like a basin outlet. When I displayed 'watershed' a small yellow
area appeared.

  This is how it used to work here, too.

  Here's the region and commands used on my data:

From project location:

g.region -p
projection: 99 (NAD83(HARN) / Oregon North)
zone:       0
datum:      nad83harn
ellipsoid:  grs80
north:      175430.80940854
south:      174426.61003591
west:       2295620.05945154
east:       2296197.40538338
nsres:      1.00019858
ewres:      1.00059954
rows:       1004
cols:       577
cells:      579308

g.list type=rast
bare_earth

r.watershed elev=bare_earth drain=drainage --overwrite

r.water.outlet in=drainage out=watershed coord=2295821.27858,175258.094514 -- 
overwrite

  But, now when I use the GUI icon to display 'watershed' nothing appears.

  Using d.mon start=wx0; d.rast map=watershed also displayed nothing.

  Something changed. How do I trace the reason to the source?

Thanks,

Rich


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