[GRASS-dev] Re: [GRASS GIS] #669: let users save/load mapcalc expressions

GRASS GIS trac at osgeo.org
Mon Aug 3 09:34:59 EDT 2009

#669: let users save/load mapcalc expressions
  Reporter:  timmie       |       Owner:  grass-dev at lists.osgeo.org
      Type:  enhancement  |      Status:  new                      
  Priority:  normal       |   Milestone:  6.5.0                    
 Component:  wxGUI        |     Version:  svn-develbranch6         
Resolution:               |    Keywords:  map calculator           
  Platform:  Linux        |         Cpu:  x86-32                   
Comment (by 1gray):

 Replying to [ticket:669 timmie]:
 > The mapcalc expressions are sometimes long.
 > Please enable a save/laod option.
 > The mapcalc expression files may have placefolders for raster files or
 reference particular rasters.

 This is already possible when using the command-line interface.  Consider,
 e. g.:
   bash$ (r=baz ; a=foo ; b=bar ; r.mapcalc "\"$r\" = \"$a\" + \"$b\"")

 Note that you can rely on all the Bash facilities here, like, e. g.,
 looping constructs:
   bash$ (for i in $(seq 1 10) ; do
              r.mapcalc "\"result${i}\" = \"baz\" * \"foo${i}\" +

 After the snippet of code is tested, it may easily be shared with the
 colleagues using either:
  * shared local filesystem;
  * shared NFS or SMB/CIFS volume;
  * shared VCS or your own public DVCS repository;
  * a mailing list, a newsgroup or a Wiki page;
  * a WWW page;
  * or a sheer variety of other means.

 IOW, all the requested functionality is, in fact, present in GRASS (except
 for the sharing part, but why should it be?)  Therefore, I'm suggesting
 '''wontfix''' for this one.

Ticket URL: <https://trac.osgeo.org/grass/ticket/669#comment:6>
GRASS GIS <http://grass.osgeo.org>

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