[GRASS-user] Tips on how to delete areas with no categories?

[Moskovitz, Bob]

Hello Grass-Users,
 
After using r.to.vect, I have areas with no categories.  These areas appear to be holes.  This is what the map look like with info from v.what:  http://bobdebm.googlepages.com/example_area.png/example_area-full;init:.png
 
How do I remove these areas?
 
Thanks in advance.
 
Bob
 

Bob Moskovitz 
Research Analyst I 
Seismic Hazard Zonation Project
California Geological Survey 
http://www.conservation.ca.gov/cgs/shzp<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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