[STATSGRASS] GRASS 6 beta and R

[Roger Bivand]

On Wed, 26 Jan 2005, Trevor Wiens wrote:

> I'm trying to use the R interface from the GRASS 6 beta.
> 
> When initializing the system with 
> G <- gmeta()
> 
> I get the following error:
> Error in gmeta() : Bad or no region for current mapset
> 
> If I use the command
> G <- gmeta(FALSE), or G <- gmeta("r.region -p")
> there is no error message, but then when I try to do something like:
> 
> suffield <- rast.get(G, rlist=c("dem.30m", "birdsites_buffer_rast"), catlabels=as.logical(c(F,T)))
> Error in rast.get(G, rlist = c("dem.30m", "birdsites_buffer_rast"), catlabels = as.logical(c(F,  : 
>         region for current mapset l
> run "g.region"
> 
> This occurs. 
> 
> The R interface runs fine from GRASS 5.4, but not from the 6 beta. Has something changed that broke this?

Yes, there are changes that impact the working of the interface. A 
workaround was found in reply to a question here earlier in January, the 
thread starts at:

http://grass.itc.it/pipermail/statsgrass/2005-January/000179.html

and it seemed that setting interp=TRUE helped for now. Sorry for the 
inconvenience, but while the existing interface works for GRASS < 5.7, 
this may be the fix that has to be used for some weeks.

Roger

> 
> Is there a way I can fix it, or do I need to run this only from 5.4.
> 
> Thanks for your assistance.
> 
> T
> --
> Trevor Wiens 
> twiens at interbaun.com
> 
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no