On 14-05-17 17:04, Markus Neteler wrote:
Hi
On May 13, 2017 10:42 PM, "Paulo van Breugel" <p.vanbreu...@gmail.com
<mailto:p.vanbreu...@gmail.com>> wrote:
>
> Hi, when using v.surf.bspline with sparse vector map points
(sparse_input) the output vector map is a 3D vector point map with the
interpolated values as z-values. However, I want to get the
interpolated values as values in a column of the attribute table. Any
idea how to do this?
You can use v.to.db for this task:
https://grass.osgeo.org/grass72/manuals/v.to.db.html#examples
Thanks. It takes a few more steps because the output vector layer of
v.surf.bspline has only one category, so v.to.db with option=coor will
not work. What I am doing now is:
v.surf.bspline input=calibration sparse_input=validationpoints \
column=elevation output=bspline_1
v.category input=bspline_1 output=bspline_2 option=del cat=-1
v.category input=bspline_2 output=bspline_3 option=add
v.db.addtable map=bspline_3
v.db.addcolumn map=bspline_3 \
columns='x double precision,y double precision,z double precision'
v.to.db map=bspline_3 option=coor columns=x,y,z
which feels like a lot of steps to accomplish this. Is there a better
way to do this?
Markus
_______________________________________________
grass-dev mailing list
grass-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-dev
