The package RSaga has modified quadratic Shepard and with the package spgrass6 you can access regularized Spline with tension (available in GRASS GIS but accessible from R using the spgrass package). Hope it helps.
Cheers On Mon, Oct 4, 2010 at 5:26 AM, gianni lavaredo <gianni.lavar...@gmail.com>wrote: > Dear Researchers, > > for my work I need to test several interoplation tec.. I found these: > > > 1. Inverse Distance Weighted (IDW) interpolation: gstat > 2. Multilevel B-spline Approximation: MBA > 3. Thin Plate Spline: fileds > 4. Bivariate Linear Interpolation: Akima > 5. Bivariate cubic spline interpolation: Akima > 6 Nearest Neighbour: gstat with idw( ... , nmax=1) > > but I can not find > > 7. Modifed Quadratic Shepard > 8. completely regularised splines > 9. spline with tension > 10. inverse quadratic > > some people know if are there package to use these types of interpolation? > > thanks in advance > Gianni > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
