[GRASS-user] Measuring Distance Along a Line

Alex Mandel tech_dev at wildintellect.com
Thu Jan 19 01:27:21 EST 2012


On 01/18/2012 12:32 PM, Rich Shepard wrote:
> On Wed, 18 Jan 2012, Alex Mandel wrote:
> 
>> I'm not sure I get what you're trying to do, but distance along a line
>> would be in the v.net module.
> 
> Alex,
> 
>   When I read the v.net man page it suggested that it provided distances
> from node-to-node on a network map. The profile map I created is separate
> from the points map, and I'm looking for the distance to the point along
> the
> line.
> 
>   However, it occurred to me that I can get this from the r.profile output
> because the points are just above the stream channel so they'll be slightly
> higher in elevation than the lowest point on the profile. That's good
> enough
> for presentation purposes.
> 
> Thanks,
> 
> Rich

I think I'd need to see a diagram to understand the setup better. There
is a v.patch tool that connects a point to the nearest location along
lines. After which you can measure the patch distance.

Glad you found something that works though.

Alex



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