Re: [GRASS-user] Break lines in vector A at locations of points in vector B

2018-03-06 Thread thepattonian
Vincent, I’ll try your suggestion, thanks. Vector B is not a subset of vector A, but rather it contains all vertices of vector A. -- Eric > On Mar 6, 2018, at 1:26 PM, Vincent Bain wrote: > > Hello Eric, > did you try v.split on vector A, with the vertices argument set to 2?

Re: [GRASS-user] Joining attributes of points to spatially-coincident line vertices

2018-03-06 Thread Patton, Eric (NRCan/RNCan)
>Not sure what your overall goal is here. (Won't the slopes along the coastline >all be about 0?). If there are >two adjacent points with different slopes from >the raster, which value would you want to attach to the line >segment between >those points? I am trying to assign a general raster

Re: [GRASS-user] Joining attributes of points to spatially-coincident line vertices

2018-03-06 Thread Micha Silver
Not sure what your overall goal is here. (Won't the slopes along the coastline all be about 0?). If there are two adjacent points with different slopes from the raster, which value would you want to attach to the line segment between those points? But you could

Re: [GRASS-user] Break lines in vector A at locations of points in vector B

2018-03-06 Thread Vincent Bain
Hello Eric, did you try v.split on vector A, with the vertices argument set to 2? (or maybe does vector B contain only a subset of A vertices) Vincent. Le mardi 06 mars 2018 à 16:50 +, Patton, Eric (NRCan/RNCan) a écrit : > Hi, > > I have two vector maps, vector A is a line vector

[GRASS-user] Break lines in vector A at locations of points in vector B

2018-03-06 Thread Patton, Eric (NRCan/RNCan)
Hi, I have two vector maps, vector A is a line vector representing coastline, and vector B is vector points which are the vertices of vector A. Is there a way to split vector A into line segments using vector B as breakpoints? v.edit tool=break kind of does this, but seems to want coordinates

[GRASS-user] r.in.lidar build errors

2018-03-06 Thread Rich Shepard
I think there was a recent thread on *.in.lidar modules, but I paid no attention as I'm not currently using lidar data. After checking out the latest from the grass7_trunk svn repository I configured the source tree and tried to build it. There are errors in the *.in.lidar modules; each has

[GRASS-user] Joining attributes of points to spatially-coincident line vertices

2018-03-06 Thread thepattonian
I have a high-resolution vector coastline, and I extracted the vertices of this coastline to points using 'v.to.points use=vertex'. I am trying to find the nearest raster slope value from another map to these points, and then upload this slope to the attribute table of the vector points