[GRASS-dev] Re: [GRASS GIS] #73: r.out.gdal tiff output does not work

[GRASS GIS]

#73: r.out.gdal tiff output does not work
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  Reporter:  helena   |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect   |      Status:  new                      
  Priority:  major    |   Milestone:  6.4.0                    
 Component:  default  |     Version:  svn-trunk                
Resolution:           |    Keywords:  r.out.gdal, tiff         
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Comment (by hamish):

 Replying to [comment:2 dylan]:
 > The data range as reported in ArcMap 9.2 when opening a geotiff exported
 from
 > r.out.gdal is (1.17549e-038,3.40282e+038).

 If it were the NULL value, I'd expect to see extreme values only on one
 side, not both. Endian problems is another suspect, but probably unlikely
 if all on x86.

 > I have noticed that when setting the files symbology, when set to a
 fixed number
 > of classes (ranges) the correct data range is displayed, and the image
 seems to
 > work fine. This suggests that it may be an out of range or unusual (in
 terms of
 > ArcMap logic) no-data value.

 can you do like d.historgram or r.univar in Arc to see if the values are
 streched over that range or are mostly correct but with weird outliers?

 what if you try other output types besides Float32?


 Hamish

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Ticket URL: <http://trac.osgeo.org/grass/ticket/73#comment:3>
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