[GRASS-user] new addon for multivariate surface interpolation from sparse points with smoothing
markus.metz.giswork at gmail.com
Thu Aug 25 21:28:53 PDT 2016
On Fri, Aug 26, 2016 at 1:24 AM, Sajid Pareeth <spareeth at gmail.com> 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 need to update
your local copy of GRASS
> Then if I increase the thinning factor, it works, but the algorithm thinned
> out quite a lot of points.
That could be desired.
> Any lead would be helpful, thanks
> On Thu, Aug 25, 2016 at 9:02 PM, Markus Metz <markus.metz.giswork at gmail.com>
>> 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 elevation as a covariate. The module
>> can also be used for gap filling of remote sensing data, e.g. MODIS
>> LST reconstruction of cloud-covered areas, after fine-tuning the
>> module's parameters. The module works only with GRASS 7.2+.
>> Markus M
>> grass-user mailing list
>> grass-user at lists.osgeo.org
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