[GRASS-user] Snap a point to a line?

Daniel Victoria daniel.victoria at gmail.com
Wed Aug 13 15:53:25 EDT 2008


I've done this using v.distance with the upload option (to_x and to_y)
to get the coordinate of the nearest place in a line close to my
points. Then I'd export the to_x and to_y columns and create a new
point vector file.

I've done this so I could create the watersheds for 150 pour points,
snapping each point to the rivers line derived by the flow


On Wed, Aug 13, 2008 at 4:33 PM, Moritz Lennert
<mlennert at club.worldonline.be> wrote:
> On 13/08/08 21:19, Alex Mandel wrote:
>> Jonathan Greenberg wrote:
>>> I have a point file that I would like to have the points snapped to the
>>> nearest line in a different vector file (preferably anywhere along the
>>> length of the line, although the nearest line node would be ok) -- how do I
>>> do this in GRASS?
>>> --j
>> v.patch can draw lines from the point to the existing network
>> v.net op="connect" can put the points on the line if you need them as
>> nodes for network analysis.
> or:
> v.edit with the bgmap= parameter.
> v.distance with output= parameter which creates a map of lines which you can
> then v.patch.
> Moritz
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