[GRASS-user] Triangle plot with correspoding map

[Martin Wegmann]

On Thursday 29 November 2007 17:07:59 Michael Barton wrote:
> You should be able to gather the data to do this with r.stats. For example,
> from the Spearfish soils maps...
>
> r.stats -1 -n
> input=soils.Kfactor at PERMANENT,soils.Tfactor at PERMANENT,soils.ph at PERMANENT
> fs=space nv=* output=soilsout.txt

thanks - however creating a triangle with 3 colour gradients and make it 
corresponding to the map (based on 3 input maps) remains as a rather big 
problem - or am I wrong? 
I am not experienced with that, but my colleague only managed it using 
powerpoint/photoshop.

Martin

> Michael
>
>
> On 11/29/07 8:03 AM, "Martin Wegmann" <wegmann at biozentrum.uni-wuerzburg.de>
>
> wrote:
> > Hello,
> >
> > a colleague wanted to display 3 different attributes (e.g. bare soil,
> > vegetation, shadow), so far he did a map with a triangle plot manually
> > (see attachment by M. Schramm).
> >
> > And he asked (and I wonder) if it would be possible to generate something
> > along these lines using GRASS. Using 3 input raster and displaying a 3
> > gradient colour map with a corresponding triangle legend.
> >
> > cheers, Martin
>
> __________________________________________
> Michael Barton, Professor of Anthropology
> Director of Graduate Studies
> School of Human Evolution & Social Change
> Center for Social Dynamics and Complexity
> Arizona State University
>
> phone: 480-965-6213
> fax: 480-965-7671
> www: http://www.public.asu.edu/~cmbarton