Hello! Is there a simplier way in R to get a nonlinear regression (like nls) for a surface? I have 3D data, and it is definitely not a linear surface with which it would fit the best. Rather sg like z = a + f(x) + g(y) where probably both f and g are polinomes (hopefully quadratic).
Szilvia -- View this message in context: http://r.789695.n4.nabble.com/non-linear-regression-for-3D-data-tp2320982p2320982.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.
