I have probably the same problem as Darren. I need to remove boundaries between adjacent maps, which were merged together (look at the picture http://best.krajinari.com/konfer.png). So I need to get only polygons boundaries in the map (attributes indeed). I tryed to use spatial dissolve (as described befor) first : v.clean input=ostatni_plochy_extract output=plochy_clean type=line,boundary,area tool=break,rmdupl,snap tresh=.01 than : v.dissolve input=plochy_clean output=plochy_diss layer=1 But it doesn't seems to make any changes. Best regards Martin
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