On 08/30/2010 03:54 PM, gianni lavaredo wrote:
Dear Researchers,
sorry for the first email but i have connection problem
I am writing a code to evaluate several interpolation methods to create a
DEM from LiDAR points. I read in bibliography several papers and methods,
but same methods I didn't find inside the library:
Hi Gianni,
I'm not sure what you tried when you looked, but you could try this in
an R session:
??'idw'
??'spline'
??'nearest neighbor'
Or google it:
"r nearest neighbor"
"r thin plate spline"
This got me a lot of results that should be helpful to you. In addition,
I see no kriging type interpolations, any reason to exclude them?
cheers,
Paul
Methods
Inverse distance weighted = library RSAGA
completely regularised spline = ??
thin plate splines = library RSAGA
splines with tension = ??
inverse quadratic = ??
natural neighbour = library RSAGA (there is a problem)
Nearest Neighbour = library RSAGA
Modifed Quadratic Shepard = library RSAGA
Multilevel B-Spline Interpolation = library RSAGA
are there another library with the missing interpolation methods?
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
--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 253 5773
http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
_______________________________________________
R-sig-Geo mailing list
R-sig-Geo@stat.math.ethz.ch
https://stat.ethz.ch/mailman/listinfo/r-sig-geo
