> 
> Hello:
> 	I'm trying to import some ARC/INFO coverages to GRASS4.1 using the
> v.in.arc routine. Everything goes well until I run v.support and get this
> message:
> 
> 	PNT_TO_AREA failed: (709787, 4424528) (category 12)
> 
> This happens on one coverage but not the other, even though the ungenerated 
> files used as input to v.in.arc appear okay.  The result is a loss of that
> particular poly in the newly created GRASS vector file.
> 	Is there another (better) way to convert ARC data? I will ultimately
> convert all to raster.
> 
> Thanks
> Michael Killion  (killion@ukanvm.bitnet  or  mike@geogsun.geo.ukans.edu)
> 

The message may have been caused by the fact that that particular polygon
had not been closed according to Grass's rules. In our experience, Grass
is more stringent about snapping nodes and lines together then some other
GIS (such as Genamap), so you may have to run v.support option 1 with some
snapping criterion to close these polygons. Secondly, Grass does not in
all cases create polygons when these are touching the region boundaries -
but we haven't figured out exactly when this happens....


