[GRASS-user] shortest distance within a points layer

Alex Mandel tech_dev at wildintellect.com
Mon Aug 11 06:16:47 EDT 2008

G. Allegri wrote:
> Hi list.
> I need to evaluate the shortest distance between the points of the same layer .
> v.distance fails as to_map and from_map overlap (every shortest
> distance is obviously 0: from point to itself). I was considering the
> use of network analysis tools... but I don't see a straigthforward way
> with them.
> Giovanni

How about v.distance -a which creates a distance matrix then you can 
query the table for lowest value, group by point and exclude distances of 0.
see http://www.grass.itc.it/gdp/html_grass63/v.distance.html


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