[GRASS-user] 7.7.dev: No raster map displays [UPDATE]

Helmut Kudrnovsky hellik at web.de
Wed Jul 24 11:57:47 PDT 2019

Rich Shepard wrote
> On Wed, 24 Jul 2019, Rich Shepard wrote:
>> While waiting for a solution to the display issue I tried running r.flow
>> on
>> the DEM and aspact maps. Grass refused because of a region resolution
>> discrepancy between the analytical_area and DEM maps:
>> 'g.region vect=analytical_area res=3 -p' did not change the floating
>> point
>> values to integer 3s.
> Using nwres and ewres set to 3 also made no difference.
> Setting the region to the DEM allows r.flow to run, but it does not
> produce
> the flowline map, only flowlengths and flowaccumulation.
> So, three (perhaps related?) issues remain: 1) no display of raster maps
> regardless of region, 2) r.flow does not produce flowline map, and 3)
> cannot
> set nsres/ewres to integer 3 on vector analytical_area map.
> Regards,
> Rich
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If you want that analytical extent matches your vector extent _and_ the DEM
resolution,  use g.region -a raster=DEM vector=yourvector. 

Please read the g.region manual. 

best regards
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