[GRASS-dev] Re: [GRASS GIS] #1640: r.in.gdal scale/offset not applied

[GRASS GIS]

#1640: r.in.gdal scale/offset not applied
--------------------------------------+-------------------------------------
 Reporter:  alf                       |       Owner:  grass-dev@…              
     Type:  enhancement               |      Status:  new                      
 Priority:  normal                    |   Milestone:  7.0.0                    
Component:  Raster                    |     Version:  6.4.2                    
 Keywords:  r.in.gdal, scale, offset  |    Platform:  Linux                    
      Cpu:  Unspecified               |  
--------------------------------------+-------------------------------------
Changes (by hamish):

  * type:  defect => enhancement
  * milestone:  6.4.3 => 7.0.0


Comment:

 Hi,

 afaik they are non-standard extensions and just treated as plain-text
 metadata by GDAL. heuristics might be possible (albeit fragile), but
 perhaps not advisable to apply them by default. (e.g. makes filtering out
 transformed non-NULL no-data values a bit more difficult)


 for examples of semi-automatic transforms see:
  http://grass.osgeo.org/wiki/MODIS#Processing

 and exponential flavour: (where Slope and Intercept are present but not
 y=mx+b)
  http://grass.osgeo.org/wiki/MODIS#Processing_2


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/1640#comment:2>
GRASS GIS <http://grass.osgeo.org>