[GRASS-dev] installing v.mapcalc fails

[Sören Gebbert]

Hi,
the GSoC implementation of v.mapcalc is still available:
https://code.google.com/p/grass-gis-temporal-algebra/source/browse/#svn%2Ftrunk%2Fv.mapcalc

However, the approach in the GSoC v.mapcalc is very different from the
v.mapcalc addon from 2002.
The algebraic expressions are applied to whole vector maps, rather
than single points, list of points, lines or polygons.

Best regards
Soeren


2015-10-13 3:53 GMT+02:00 Vaclav Petras <wenzeslaus at gmail.com>:
>
> On Mon, Oct 12, 2015 at 6:24 AM, Glynn Clements <glynn at gclements.plus.com>
> wrote:
>>
>> Markus Neteler wrote:
>>
>> > <p.vanbreugel at gmail.com> wrote:
>> > ...
>> > > Sorry for the late follow up. The add-on installs now. When trying to
>> > > run
>> > > it, however, nothing happens.
>> >
>> > It does not have a parser (yet?), so I suppose it reads from stdin.
>>
>> Yes.
>>
>> But it doesn't have any code to read or write GRASS vectors, either.
>> v.mapcalc appears to be a work-in-progress which hasn't actually made
>> noticeable progress since it was added.
>
> Then I suggest to remove it from the Makefile parent directory and also
> disable it in the addons build scripts if there is something more needed
> than r66406 [1] which is blacklisting it somehow already. It does not
> fulfill what user would expect (at least some functionality). Those who want
> to continue development will get it through svn.
>
> I'm not sure happened [2] with the v.mapcalc implemented as a test case in
> GSoC [3] and if the functionality can be still used. But this seems like a
> good alternative to the code in addons.
>
> Vaclav
>
> [1] https://trac.osgeo.org/grass/changeset/66406
> [2] https://lists.osgeo.org/pipermail/grass-dev/2013-October/065908.html
> [3]
> https://grasswiki.osgeo.org/wiki/GRASS_GSoC_2013_Temporal_GIS_Algebra_for_raster_and_vector_data_in_GRASS#v.mapcalc
>
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