Hello everyone, I have been trying to figure out away to integrate under a spline produced by the package tps(fields). As the package does not output functions I am trying to do something similar to the trapezium rule. My data are 3D (x, y & z). I have extracted from the surface output by Tps the values of z at regular intervals so that I have a grid of figures, for example:
1 4 6 6 8 8 3 2 7 7 2 3 4 9 7 1 2 5 6 7 0 1 4 5 6 I was wondering what the best method for working out the functions of the squares between the number corner points is? I have a number of these to do and am struggling to think of a code or where to look that will process my data in this way so that I can then integrate. Any help or advice would be much appreciated! Sam -- View this message in context: http://r.789695.n4.nabble.com/Finding-functions-of-large-dataset-for-numerical-integration-tp2399305p2399305.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
