Hi, have you tried Qgis, which also comes with built in GRASS features. Digitisation and attribution is quite easy in Qgis. Ravi Kumar
--- On Sun, 3/22/09, Markus Neteler <nete...@osgeo.org> wrote: > From: Markus Neteler <nete...@osgeo.org> > Subject: Re: [GRASS-user] Help needed in creating a thematic map > To: "Thomas Adams" <thomas.ad...@noaa.gov> > Cc: "grass-user" <grass-user@lists.osgeo.org> > Date: Sunday, March 22, 2009, 1:38 AM > Thomas, > > On Sun, Mar 8, 2009 at 4:03 AM, Thomas Adams > <thomas.ad...@noaa.gov> wrote: > > List: > > > > I need to create a map in GRASS like the attached map. > This needs to be done > > on a daily basis, and it needs to be created by those > who have little GIS or > > GRASS knowledge or experience. The critical aspect is > to manually > > draw/digitize the critical "likely" or > "possible" areas. And I am struggling > > with v.digit doing this, but it's not the main > problem. > > (which v.digit do you use?) > Perhaps Featureserver would be a good idea here: > http://featureserver.org/ > http://www.paolocorti.net/2008/02/21/a-day-with-featureserver-1/ > > (random demo: http://dev.riverchange.org/featureserver/ > use the + at top right to activate WMS > SHIFT-left-mouse-button to zoom in via box > ) > > Or the new digitizer in GRAS 6.4: > http://grass.osgeo.org/screenshots/vector.php > -> New vector digitizer tool with advanced editing > features > > > The key issue is > > attaching attribute data to the polygonal regions that > define the period > > over which the "likely" or > "possible" areas apply, as the graphic shows. > > Both Featureserver and GRASS digitizer support this. > > > ALSO, the boundary data and the attributes (the valid > Date period) need to > > be exported to an ascii text file which is then > ftp'ed to a central location > > (new) v.out.ascii export attributes in point mode. You > could export > the ASCII data in "standard" format, then convert > centroids to points > and in a second run of v.out.ascii export attributes. > > > — the end users use their own software to combine > other such files to create > > a graphic (actually the one I am showing). Now, > combining the exported data > > into the format needed by the end user is not an > issue, > > At this point I would export SHAPE format which includes > the attributes > in the DBF table. > > > it's really a matter > > of how to most efficiently (easily) get the Starting > and Ending dates into > > the attributes of the polygons. > > I would just use two columns in the attribute table. > > > Also, should I try to use a separate vector > > map for each polygon of the same type > ("likely" or "possible") or should > > they be in different layers? > > IMHO yes. > > > I'll have to write detailed instructions covering > how to do this, but I need > > to know how to do this first! > > > > I'm very open to suggestions… > > Hope this helps, > Markus > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user