[GRASS-dev] [GRASS-user] Fwd: Re: R + grass7

[Roger Bivand]

On Wed, 29 Aug 2012, Paulo van Breugel wrote:

> Hi,
>
> You can find a list of changes in option settings and names here: 
> http://trac.osgeo.org/grass/wiki/Grass7/NewFeatures#Renamedoptions

Thanks, this may be helpful, but is misses small things like the name 
being the same but the representation changing. For example, in some v.* 
like v.info, the layer parameter in 6* is integer, but 7 wants character.

http://grass.osgeo.org/grass64/manuals/html64_user/v.info.html

http://grass.osgeo.org/grass70/manuals/html70_user/v.info.html

r.info is also changed, with 6* -t having to be re-created for 7 -g then 
find the "datatype" in the output.

http://grass.osgeo.org/grass64/manuals/html64_user/r.info.html

http://grass.osgeo.org/grass70/manuals/html70_user/r.info.html

Those broke the R code, so spgrass6 has to branch on GRASS 6/7 version in 
these cases; others I've seen break example scripts. For script 
maintainers, it may be unavoidable that changes have to be made, I agree, 
but it can be puzzling.

Roger

>
> Cheers,
>
> Paulo
>
>
>
> On 08/29/2012 02:50 PM, Helmut Kudrnovsky wrote:
>> fyi a question regarding an "translation" (flags,parameter) table between 
>> grass6x and grass7.
>> 
>> Helmut
>> 
>> -------- Original-Nachricht --------
>> Datum: Wed, 29 Aug 2012 14:35:37 +0200 (CEST)
>> Von: Roger Bivand
>> An: Helmut Kudrnovsky
>> Betreff: Re: R + grass7
>> 
>> On Wed, 29 Aug 2012, Helmut Kudrnovsky wrote:
>> 
>> > Dear Roger,
>> >
>> > I'm trying to improve the GRASS GIS-R-coupling on windows
>> > (http://trac.osgeo.org/grass/ticket/1149). 
>> <https://service.gmx.net/de/cgi/derefer?TYPE=3&DEST=http%3A%2F%2Ftrac.osgeo.org%2Fgrass%2Fticket%2F1149%29.>
>> >
>> > May I ask you if spgrass6
>> > (http://cran.at.r-project.org/web/packages/spgrass6/index.html) 
>> <https://service.gmx.net/de/cgi/derefer?TYPE=3&DEST=http%3A%2F%2Fcran.at.r-project.org%2Fweb%2Fpackages%2Fspgrass6%2Findex.html%29> 
>> is GRASS
>> > GIS 7-aware.
>> 
>> Yes, the description on:
>> 
>> http://cran.r-project.org/web/packages/spgrass6/index.html 
>> <https://service.gmx.net/de/cgi/derefer?TYPE=3&DEST=http%3A%2F%2Fcran.r-project.org%2Fweb%2Fpackages%2Fspgrass6%2Findex.html>
>> 
>> uses "6+" to signal that subsequent versions are intended to work. Since
>> the package only uses system(), it will work as long as
>> --interface-description returns an XML file. Plenty of examples and
>> scripts stop working because GRASS 6 and 7 modules have different flags
>> and/or parameter names, but in principle only for that reason. It's hard
>> for me to check - it would be useful to have a translation table for flag
>> and parameter names by module where changes have occurred.
>> 
>> Best wishes,
>> 
>> Roger
>> 
>> -- 
>> Roger Bivand
>> Department of Economics, NHH Norwegian School of Economics,
>> Helleveien 30, N-5045 Bergen, Norway.
>> 
>> 
>> 
>> _______________________________________________
>> grass-user mailing list
>> grass-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/grass-user
>
>

-- 
Roger Bivand
Department of Economics, NHH Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no