[GRASSLIST:4980] Re: US Census boundary file problem

Michel Wurtz mjwurtz at wanadoo.fr
Sun Nov 17 18:17:38 EST 2002

Michael Ash wrote:
> I have downloaded boundary files from the U.S. Bureau of the
> Census (http://www.census.gov/geo/www/cob/) in .e00 format.
> For example st99_d00.e00 is the complete state boundaries
> for the U.S. for 2000.  When I import the file with
> m.in.e00, d.vect shows a map of the United States but the
> raster file produced by v.to.rast has holes, specifically
> Texas and Massachusetts.
> Perhaps the vector areas are not closed for those states?
> How is it possible in GRASS to close the vector areas if
> that is indeed the problem?

use v.digit.  But it may also be the lack of a label point
inside the polygon (verify wether v.support shows errors or not
when running on your vector file).  This can also be corrected with

Michel Wurtz

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