[GRASS-dev] [GRASS GIS] #3860: GRASS GIS producing different slope than GDAL

GRASS GIS trac at osgeo.org
Tue Jun 11 00:20:27 PDT 2019

#3860: GRASS GIS producing different slope than GDAL
  Reporter:  mazingaro  |      Owner:  grass-dev@…
      Type:  defect     |     Status:  reopened
  Priority:  normal     |  Milestone:  7.6.2
 Component:  Raster     |    Version:  unspecified
Resolution:             |   Keywords:  slope
       CPU:  x86-64     |   Platform:  Linux

Comment (by mmetz):

 Replying to [comment:15 mankoff]:
 > Running `r.univar` at the region resolution (as above) or at the raster
 > {{{
 > for r in $(g.list mapset=. type=raster); do
 >   g.region raster=${r} -a
 >   (echo -n "${r} "; r.univar ${r} | grep range)
 > done | sort | tac
 > }}}
 > Does not change anything.

 Right, this was a bug in r.slope.aspect, alignment to the input raster did
 not work (difference between `G_get_window()` and `Rast_get_window()`).
 Fixed in master, relbr76, and relbr74.

Ticket URL: <https://trac.osgeo.org/grass/ticket/3860#comment:16>
GRASS GIS <https://grass.osgeo.org>

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