[GRASSLIST:556] Re: line to area

[Ivan Marchesini]

Hi,
I don't know if this could help you but I hope...

if the line is snapped on itself, try v.line2area.....
then try v.alabel to assign a category number to the area and after this try 
v.to.rast...
I think this can be a solution....
bye

Ivan




Alle 00:45, sabato 28 giugno 2003, Richard Greenwood ha scritto:
> Thanks to Erin O'Doherty and John Dougherty for the quick replies. My
> mistake was that I had not labeled my area in v.digit. All I wanted was a
> MASK, so I wasn't thinking about labels. But v.to.rast was expecting a
> label.
>
> Thanks for the help guys.
> Best regards,
> Rich
>
> At 12:41 PM 6/27/2003 -0700, you wrote:
> >On Friday 27 June 2003 11:12, Richard Greenwood wrote:
> > > I created a line with v.digit and I now want to convert it to
> > > an area. Seems like a simple question, but how do I do it?
> > >
> > > Thanks,
> > > Rich
> >
> >Rich,
> >
> >You need to snap the starting and ending nodes together.  I have
> >not had much to do with digitizing in GRASS, however, v.digit is
> >probably the tool to use.  The snap distance should be set to
> >force nodes together that are within the error of the map, which
> >for USGS maps is 0.002.  Neteler and Mitasova discuss this in
> >their book.
> >
> >John Dougherty
>
> Richard W. Greenwood, PLS
> Greenwood Mapping, Inc.
> Rich at GreenwoodMap.com
> (307) 733-0203
> http://www.GreenwoodMap.com

-- 
Ivan Marchesini
University of Perugia 
Italy