Hi @Makis,
I’ve tried rbf-thin-plate-splines mapping (see this issue) and the case is (as far as I can tell by now) working quite well.
Nevertheless I think my approach for RBF is not correct. I am mapping data from a beam (1D line of points) to a OpenFOAM patch (2D). Normally this wouldn’t work with RBF, because of the 1D beam. Therefore, I’ve just copied the beam 10 times in parallel. With this approach, I am getting better mapping, than with nearest-neighbor mapping.
If you have any suggestions to improve this “shady” approach, I would be glad to see them 