[R] smoothing a matrix (interpolate in plane)

[Simon Wood]

the thin plate spline, or tensor product smooths built into `mgcv' might be 
useful here (by default mgcv does automatic bandwidth selection for these). 

On Sunday 01 March 2009 09:51, Žroutík wrote:
> Hi R-users,
>
> I'd like to smooth a matrix to dismiss spikes and to interpolate in plane
>
> example of a matrix:
> Map[1:3,1:3]
>
>       [,1] [,2] [,3]...
> [1,] 34.4 34.2 35.1
> [2,] 33.4 34.2 35.4
> [3,] 34.1 33.2 32.1
> ....
>
> dim(Map)[1] =/= dim(Map)[2]
>
> What functions can I use?
>
> Thanks a lot for any response, M
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html and provide commented, minimal,
> self-contained, reproducible code.

-- 
> Simon Wood, Mathematical Sciences, University of Bath, Bath, BA2 7AY UK
> +44 1225 386603  www.maths.bath.ac.uk/~sw283