v.to.rast

GRASS GRASS user
1

I think your problem may be that many of the polygons are not closed. If
you go into v.digit you can edit the polygons to close them. I am short on
details but I hope this helps.
Walter Winant
USDA-ARS-ASWCRL
P. O. Box 400, Beaver, WV 25832
304 - 256 - 2831, wwinant@asrr.arsusda.gov

----------

From: Clifton Wood <cbwood@vt.edu>
To: grassu@cecer.army.mil
Subject: v.to.rast
Date: Monday, December 01, 1997 4:23 PM

Hello all!

I have a fairly large vector file containing field boundaries in a
specific county. I am currently trying to convert this vector
file to a raster using v.to.rast. I do the following:

g.region vect=flds.vector res=1
v.to.rast input=flds.vector output=flds.vector.out

After conversion, however, the resulting raster file is *mostly*
empty. With only certain fields in color (and the rest white).
I've *checked* the attributes file of the vector map and it
contains some 902 entries, but when I do a v.stats on my fields
layer, I get:

| Format: Version 4.0 (Level 2 access) (Portable)
|
|
| Number of Lines: 2775
| Number of Nodes: 1865
| Number of Areas: 916 (incomplete)
| Number of Isles: 23 (incomplete)
| Number of Atts : 896

I've tried running v.support, but I can't seem to get that
"(incomplete)" notice
to go away. Does anyone have any idea as to what my problem is and
whether
or not it can be fixed so I can finally get this vector map in raster
format?

*Any* help is appreciated. Thanks in advance.

Take care.
--

Clifton B. Wood
Programmer/Analyst for Virginia Tech's AGNIS Department
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