2009/6/22 Micha Silver <[email protected]> > maven apache wrote: > > >> >> >> I did have five vector layer each of which have only one >> categories,Actually I got the five vector from the commond >> "v.extract......"; >> Normally you would use d.vect.thematic if you have 5 categories >> in *one* vector map. Then setting i.e. column=cat would color each >> different cat value a different color. >> >> Where is the generated thematic map,in the display? >> > Maybe this will help: > I have a vector layer "fields". I ran these two commands (after setting the > region): > > # Display fields with different colors based on area > d.vect.thematic map=fields column=HECTARES color=red-blue
"You must open a display monitor" I meet this error message when do the commond "d.vect.thecmatic....", by the serach enginee I found this topic has mentioned in the grass-dev mailist,but I have not found the final way to solve the problem/ > > # Add a label with the area for each field > d.vect map=fields display=attr type=centroid attrcol=HECTARES lsize=10 > lcolor=black > > And the result is the attached image. The d.vect.thematic broke the fields > into 4 categories based on size (two larger fields have the same color). I > could have changed the number of intervals with the nint option. > > Cheers, > Micha > >
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