[GRASS-dev] upload cat values from lines to points

Helmut Kudrnovsky hellik at web.de
Wed Nov 23 08:58:38 PST 2016


Moritz Lennert wrote
> Le 23 novembre 2016 17:31:17 GMT+01:00, Paulo van Breugel <

> p.vanbreugel@

> > a écrit :
>>Hi devs,
>>
>>One can use v.what.vect to upload cat values (or attribute values from 
>>attribute table) of a polygon vector layer (query map) to attribute 
>>table of a point vector layer.
>>
>>How can I do the same, but using as map to query a line vector layer 
>>instead of polygon layer?
> 
> Unless you create your points from the lines, the probability that your
> points are precisely on your lines is extremely low (even when you create
> them from the lines I'm not sure precision issues won't play you tricks).
> 
> I would create small buffers around the lines with attribute transfer to
> the buffers (-t flag of v.buffer).

v.distance with a very low dmax?



-----
best regards
Helmut
--
View this message in context: http://osgeo-org.1560.x6.nabble.com/upload-cat-values-from-lines-to-points-tp5297158p5297165.html
Sent from the Grass - Dev mailing list archive at Nabble.com.


More information about the grass-dev mailing list