#2409: last call for options keys consolidation
----------------------------------+-----------------------------------------
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 |
----------------------------------+-----------------------------------------
Comment(by wenzeslaus):
Replying to [comment:189 glynn]:
> Replying to [comment:187 wenzeslaus]:
>
> > `r.mapcalculator` may create some confusion because is not part of
standard GRASS GIS distribution (compilation switched off by default). It
is also not in the documentation. I don't know if the confusion is also on
the QGIS site. Another issue is that it is in Shell, not Python, so it
should not work in GRASS 7 on MS Windows as far as I understand. Finally,
so revision of messages is needed, error message "Calculating
$GIS_OPT_OUTFILE. Try expert mode." shown after `r.mapcalc` failed just
caught my eye.
>
> r.mapcalculator was never converted to Python. It was deemed unnecessary
now that r.mapcalc uses G_parser(). r.mapcalculator was created when
r.mapcalc didn't use G_parser() which meant that it couldn't generate a
GUI option dialog.
>
> If there's some situation where it's useful, it should be converted to
Python. Otherwise, it should be removed from the 7.0 tree.
I think it is needed for QGIS and perhaps other things wrapping GRASS
modules. Although I don't know much, the issue appears to be that they
don't know what maps needs to be prepared. I've never really studied the
problem. There might be some other way for callers to deal with the
expression. For example, temporal framework also wraps `r.mapcalc` and its
quite successful. Or `r.mapcalc` or some module derived from it (similarly
as `r3.mapcalc` is) can just parse the expression and output the names in
some key-value/parseable form, or there can be a Python function for it.
Some inside from application developers using GRASS GIS would be helpful.
--
Ticket URL: <http://trac.osgeo.org/grass/ticket/2409#comment:190>
GRASS GIS <http://grass.osgeo.org>
_______________________________________________
grass-dev mailing list
grass-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-dev
