Hi,
As i mentioned in my couple of previous mails, I found that v.surf.rst function does not work
for either 2D point or iso-lines unless “Use Z coordinates for approximation” flag is ticked
together with the selection of the name of the attribute column with values to be used for
approximation. When both are chosen, it runs and gives the expected output.However
I think there is a minor bug in this function and it should be rectified and made work for
2D data sets without selection of Z flag. The version of GRASS i used is WINGRASS 7
installed through OSGEO4W installer.
Cheers, Brian.