[GRASS-user] Displaying layers - GRASS 6.4.0RC6 with MSYS

[Micha Silver]

Robbie Heremans wrote:

> I use the Windows-version *GRASS* 6.4.0RC6 with *MSYS* and I want to 
> display 2 *layers* using following commands for the Spearfish60 sample 
> location.
>
> d.vect streams col=blue
> d.vect roads col=red
>
> The output file map.png only displays the last layer.
I think what you need is to set the environment variable GRASS_PNG_READ 
to TRUE. Then each run of d.vect will start with the existing png file 
and add to it.

>
> How can I display multiple layers with MSYS?
>
> Using the wxGUI interface is not an option, I think, since I want to 
> remake the example on 
>  http://casoilresource.lawr.ucdavis.edu/drupal/node/340 which uses a 
> loop (map.png only gives the points of the 5th cluster).
>
> # there are 5 clusters: show them all, and compute convex hulls
> for x in `seq 1 5` 
> do v.extract --o in=bclust where="cluster=$x" out=bclust_$x 
> v.hull --o in=bclust_$x out=bclust_hull_$x
> d.vect bclust_hull_$x type=boundary fcol=none width=2 col=white
> d.vect bclust icon=basic/box fcol=black col=black size=6
> done
>  
> Any solutions?
>
> Robbie
>
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