I've would like to see a column= option added to the v.dissolve script
to dissolve based on common data in an attribute column. perhaps a
where= option to do the same.
general method: (making this up as I go along)
make a copy of vect+table
add a new column
fill new column with unique int based on uniq attr column entries
(unix tool magic? v.out.ascii.db | sort | uniq | nl | v.in.ascii)
v.reclass column=new_col to use new column as cat
v.extract -d
# I guess you can't go back to old cats as they may have merged?
thoughts?
Hamish