[GRASS-user] Two questions

Richard Chirgwin rchirgwin at ozemail.com.au
Sat May 17 17:46:37 EDT 2008


...(mysql fixed)
>> 2) More complex, a question about polygons. I have maps with large numbers
>> of polygons with shared boundaries. Is there any way to count the number of
>> boundaries one polygon shares with its neighbors?
> You need to use two vector layers (v.category) and v.to.db. See its manual
> page for an example (or, in the new GRASS book, see
> "6.5.9 Length of common polygon boundaries"  for a similar task).
Many thanks, I will look at this!

> Markus
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