[GRASS-user] about importing overlapping polygons

Markus Metz markus.metz.giswork at googlemail.com
Mon Dec 5 11:36:38 EST 2011

Updated manual for v.in.ogr (trunk) about importing overlapping polygons:

"When importing overlapping polygons, the overlapping parts will
become new areas with multiple categories, one unique category for
each original polygon. An original polygon will thus be converted to
multiple areas with the same shared category. These multiple areas
will therefore also link to the same entry in the attribute table. A
single category value may thus refer to multiple non-overlapping areas
which together represent the original polygon overlapping with another
polygon. The original polygon can be recovered by using v.extract with
the desired category value or where statement and the -d flag to
dissolve common boundaries."

Should that or something similar with examples go somewhere into the wiki?

Markus M

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