[R-sig-Geo] (Linear) interpolation in three (or more) dimensions

[Edzer Pebesma]

package gstat offers simple 3D interpolation (idw, kriging), e.g.

library(gstat)
example(gstat3D)

and also spatio-temporal kriging; some memory limitations there may be
dealt with by using local kriging (see ?krigeST).

On 06/03/2014 08:27 AM, Mark Payne wrote:
> Hi,
> 
> I have a dataset that consists of satellite observations on a regular
> lon-lat grid at taken at regularly time pointts. Unfortunately due to cloud
> cover, there are gaps dispersed semi-randomly throughout the 3D data array.
> I would like to fill these gaps.
> 
> The "best" solution I guess is space-time kriging, if memory limitations
> permit. But before I go that far, I would like to do a simple 3D linear
> interpolation to fill the gaps i.e interpolating the temperature at the
> missing (lon, lat, time) points.
> 
> The akima package does an excellent job of this in 2D, but doesn't support
> higher dimensionality. Does anyone know of a function that supports three
> or more dimensions?
> 
> Mark
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Heisenbergstraße 2, 48149 Münster, Germany. Phone: +49 251
83 33081 http://ifgi.uni-muenster.de GPG key ID 0xAC227795

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