Hi, I have three matrices (X,Y,P) with the same dimension. The X,Y grid is regular and I want to perform linear interpolation to pick out certain points. In matlab appropriate call is something like
Pout=interp2(X,Y,P,Xout,Yout, method="linear") where Xout and Yout are the locations where I want the Pout data (typically a different grid). (Scipy has this routine in interpolate.interp2d, with similar arguments) In R there is (as often) the choice between many different interpolation routines. Akima has one for irregularly spaced data (and does not like co-linearity in the data). Fields has another one, with a more complicated arguments. What is the best R function that accomplishes this? Sincerely Halldór ______________________________________________ R-help@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.
