[GRASS-dev] [GRASS GIS] #2854: results in winGRASS7 32bit vs 64bit: should they be identical?

GRASS GIS trac at osgeo.org
Thu Jan 7 06:01:52 PST 2016


#2854: results in winGRASS7 32bit vs 64bit: should they be identical?
---------------------+---------------------------------
  Reporter:  hellik  |      Owner:  grass-dev@…
      Type:  defect  |     Status:  new
  Priority:  normal  |  Milestone:  7.0.3
 Component:  Raster  |    Version:  svn-releasebranch70
Resolution:          |   Keywords:
       CPU:  x86-64  |   Platform:  MSWindows 7
---------------------+---------------------------------

Comment (by hellik):

 Replying to [comment:5 hellik]:
 >
 > tested with r.slope.aspect
 >
 >
 > {{{
 > r.slope.aspect elevation=elevation at PERMANENT slope=slope_wg32bit
 aspect=aspect_wg32bit
 > r.slope.aspect elevation=elevation at PERMANENT slope=slope_wg64bit
 aspect=aspect_wg64bit
 > }}}
 >
 > {{{
 > r.mapcalc expression=diff_slope = slope_wg32bit at slope_test -
 slope_wg64bit at slope_test
 >
 > r.univar -e map=diff_slope at slope_test
 > total null and non-null cells: 2025000
 > total null cells: 5696
 > Of the non-null cells:
 > ----------------------
 > n: 2019304
 > minimum: 0
 > maximum: 0
 > range: 0
 > mean: 0
 > mean of absolute values: 0
 > standard deviation: 0
 > variance: 0
 > variation coefficient: nan %
 > sum: 0
 > 1st quartile: 0
 > median (even number of cells): 0
 > 3rd quartile: 0
 > 90th percentile: 0
 > }}}

 {{{
 r.mapcalc expression=diff_aspect = aspect_wg32bit at slope_test -
 aspect_wg64bit at slope_test

 r.univar -e map=diff_aspect at slope_test
 total null and non-null cells: 2025000
 total null cells: 5696
 Of the non-null cells:
 ----------------------
 n: 2019304
 minimum: 0
 maximum: 0
 range: 0
 mean: 0
 mean of absolute values: 0
 standard deviation: 0
 variance: 0
 variation coefficient: nan %
 sum: 0
 1st quartile: 0
 median (even number of cells): 0
 3rd quartile: 0
 90th percentile: 0
 }}}

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2854#comment:6>
GRASS GIS <https://grass.osgeo.org>



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