[GRASS-dev] [GRASS GIS] #3690: r.stats.quantile crashing with data linked through r.external

[GRASS GIS]

#3690: r.stats.quantile crashing with data linked through r.external
--------------------------+------------------------------------------
  Reporter:  neteler      |      Owner:  grass-dev@…
      Type:  defect       |     Status:  closed
  Priority:  normal       |  Milestone:  7.4.3
 Component:  Raster       |    Version:  svn-releasebranch74
Resolution:  fixed        |   Keywords:  r.external, r.stats.quantile
       CPU:  Unspecified  |   Platform:  Unspecified
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Comment (by mmetz):

 Replying to [comment:4 mmetz]:
 > In [changeset:"73639" 73639]:
 > {{{
 > #!CommitTicketReference repository="" revision="73639"
 > r.external: do not rely on statistics stored in metadata, they can be
 approximations (fixes #3690)
 > }}}

 These approximate statistics stored in metadata are a nightmare! The
 stored maximum value in basemap is too low:

 {{{
 gdalinfo -mm basemap.tif
   Min=1.000 Max=1061.000   Computed Min/Max=1.000,1063.000
 }}}

 However, metadata say

 {{{
 TIFFTAG_SOFTWARE=GRASS GIS 7.4.3svn with GDAL 2.2.2
 }}}

 in which case min and max should not be set at all. That means some other
 software has edited the metadata in basemap.tif, inserting approximate and
 thus wrong values.

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/3690#comment:5>
GRASS GIS <https://grass.osgeo.org>