Re: [GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-26 Thread Vaclav Petras
On Fri, Aug 26, 2016 at 12:32 AM, Markus Metz wrote: > >> If you ever wondered > >> why worldclim data (http://worldclim.org) follow so nicely elevation, > >> the reason is multivariate thin plate spline interpolation of > >> meteorological station data with elevation as a covariate. > >> [...] T

Re: [GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-25 Thread Markus Metz
On Fri, Aug 26, 2016 at 5:28 AM, Vaclav Petras wrote: > Hi Markus, > > On Thu, Aug 25, 2016 at 3:02 PM, Markus Metz > wrote: >> >> The new addon v.surf.tps performs multivariate thin plate spline >> interpolation of sparse points with smoothing. > > really interesting. I did some preliminary test

Re: [GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-25 Thread Markus Metz
On Fri, Aug 26, 2016 at 1:24 AM, Sajid Pareeth wrote: > Hi Markus > > Thank you for this excellent addon. > > I was testing it with some trmm data, and getting this error with default > "thin" value of 1.5. > > ERROR: knn: inserting duplicate This has been fixed in r69117,8 in relbr7, trunk, you

Re: [GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-25 Thread Vaclav Petras
Hi Markus, On Thu, Aug 25, 2016 at 3:02 PM, Markus Metz wrote: > > The new addon v.surf.tps performs multivariate thin plate spline > interpolation of sparse points with smoothing. really interesting. I did some preliminary tests and I might provide some feedback later. For now I updated the exa

Re: [GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-25 Thread Sajid Pareeth
Hi Markus Thank you for this excellent addon. I was testing it with some trmm data, and getting this error with default "thin" value of 1.5. ERROR: knn: inserting duplicate Then if I increase the thinning factor, it works, but the algorithm thinned out quite a lot of points. Any lead would be

[GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing

2016-08-25 Thread Markus Metz
The new addon v.surf.tps performs multivariate thin plate spline interpolation of sparse points with smoothing. If you ever wondered why worldclim data (http://worldclim.org) follow so nicely elevation, the reason is multivariate thin plate spline interpolation of meteorological station data with e