[GRASS-dev] Re: [GRASS GIS] #885: WinGrass: displaying r.external-linked raster data not working

GRASS GIS trac at osgeo.org
Mon Feb 1 09:29:39 EST 2010


#885: WinGrass: displaying r.external-linked raster data not working
------------------------------+---------------------------------------------
  Reporter:  hellik           |       Owner:  grass-dev at lists.osgeo.org    
      Type:  defect           |      Status:  new                          
  Priority:  critical         |   Milestone:  6.4.0                        
 Component:  Display          |     Version:  svn-releasebranch64          
Resolution:                   |    Keywords:  r.external, WinGrass, osgeo4w
  Platform:  MSWindows Vista  |         Cpu:  x86-32                       
------------------------------+---------------------------------------------
Comment (by glynn):

 Replying to [comment:25 neteler]:
 > Sincerely, I am a bit confused here. According to the change history
 nothing but the decorated names being added and the CPL_STDCALL lines
 being removed has been changed:

 That's correct.

 The remaining differences between 6.x and 7.0 are due to 7.0 allowing new
 raster maps to be written via GDAL (r.external.out). Back-porting this
 feature would require back-porting the corresponding changes to the
 open_new and put_row code, which isn't feasible; the raster I/O code has
 diverged too much between 6.x and 7.0.

 Regarding my comments in comment:1 :

 > OTOH, it may be better to simply omit the r.external support from 6.5;
 it's very out of date (it was back-ported shortly after the first draft of
 the code was added to 7.0, and hasn't been updated since).

 It turns out that the read support hasn't actually changed significantly,
 and back-porting the write support isn't really an option.

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/885#comment:26>
GRASS GIS <http://grass.osgeo.org>


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