[GRASS-dev] [GRASS GIS] #2409: last call for options keys consolidation

[GRASS GIS]

#2409: last call for options keys consolidation
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 Reporter:  martinl               |       Owner:  grass-dev@…              
     Type:  task                  |      Status:  new                      
 Priority:  blocker               |   Milestone:  7.0.0                    
Component:  Default               |     Version:  unspecified              
 Keywords:  standardized options  |    Platform:  Unspecified              
      Cpu:  Unspecified           |  
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Comment(by wenzeslaus):

 Replying to [comment:194 neteler]:

 > r.mapcalculator was proposed to be removed if not needed by QGIS
 Processing. I wonder how harmful it is to just keep it.

 `r.mapcalculator` documentation should say that it is only for QGIS and it
 should not be used by others because it is not guaranteed.

 I have very limited QGIS Processing knowledge but I guess QGIS Processing
 still needs `r.mapcalculator` because there is not way how QGIS Processing
 can know which maps to import and which maps to export. From my
 understanding, the only way to know would be if standard `r.mapcalc` would
 offer a flag (e.g. `-l`) which lists the inputs and output(s?):

 {{{
 > r.mapcalc -l "test1 = test2 + test3 + 5"
 input=test2,test3
 output=test1
 }}}

 and does only the parsing, not the actual computation. In GRASS GIS, this
 could be used for example, by GUI to validate the expression. Instead of
 flag, a separate module can be used (as mentioned in comment:190).

 I'm not sure how serious it is but as mentioned in comment:187,
 `r.mapcalculator` is a Shell script and Shell script are no longer
 supported by standalone GRASS GIS. But perhaps it is not an issue because
 QGIS installs its own GRASS GIS on MS Windows, OSGeo4W probably contains
 some shell and all systems except for MS Windows just have some shell.

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/2409#comment:195>
GRASS GIS <http://grass.osgeo.org>