[R-sig-Geo] GRASS-R: To work with spearfish sample data set

[Roger Bivand]

On Mon, 15 Mar 2010, Debabrata Midya wrote:

> Dear OSGeo users,
>

Arguably, you should read the GRASS book [1] carefully first, then 
consider using GRASS mailing lists - use of the R interface is discussed 
in chapter 10. Basic use of the interface as of January 2009 is also shown 
on a screen video [2]. A mailing list is not a good place to give hands-on 
training from the ground up. The questions below also suggest that getting 
to know file systems might be a helpful thing to do before reading the 
GRASS book.

Hope this helps,

Roger

[1] http://www.grassbook.org/

[2] http://spatial.nhh.no/wun09/wun_grass.swf

>
> Thanks in advance.
>
> I need your assistance to work with the above data set. I have installed this data set from http://casoilresource.lawr.ucdavis.edu/drupal/node/438. This is a winzip file and I have extracted all files into the directory \speafish60 directory. The files structure after extraction is like this:
>
> - \speafish60\PERMANANENT
>  - \speafish60\PERMANANENT\bdlg
>  - \speafish60\PERMANANENT\cats
>  - \speafish60\PERMANANENT\cell
>  - and so on
> - \speafish60\user1
>
> I have installed R-2.10.1 on windows XP.
>
> I have installed http://trac.osgeo.org/osgeo4w/.
>
> I am able to interact with GRASS and R.
>
> # set region in GRASS
>
> g.region rast=elevation.dem
>
> I have issued this command at Cmd > at GRASS GIS Layer Manager Window.
>
> But I have received the error below:
>
> ERROR: Raster map <elevation.dem> not found
>
> How can I change the directory name in GRASS to access the data.
>
> Once again, thank you very much for the time you have given.
>
> I am looking forward for your reply.
>
> Regards,
>
>
> Deb
>
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, 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