Thanks Micha for putting me on the right track. GRASS_PNGFILE=myimage.png GRASS_PNG_READ=TRUE export GRASS_PNGFILE GRASS_PNG_READ
before the d.vect commands or before the for-done-loop does the job. Robbie 2010/9/16 Micha Silver <[email protected]> > 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 >> >> This mail was received via Mail-SeCure System. >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> grass-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-user >> >> This mail was received via Mail-SeCure System. >> >> >> >> > >
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