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...follow the sine wave). Here's my code: library(princurve) x <- runif(1000,0,2*pi); x <- cbind(x/(2*pi), sin(x)) fit1 <- principal.curve(x, plot = TRUE) Anyone have any suggestions? If you run this code, do you get the correct principal curve? Any help would be really appreciated! -guy33 -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-Princurve-tp3535721p3535721.html Sent from the R help mailing list archive at Nabble.com.

...ons Does anyone know if this is just a limitation, or am I missing something. The dataset I'd like to run it on contains n=6000. If it is a limitation, does anyone know of any other ways to do this that would accommodate a larger dataset (ideally with generalized cross validation)? Thanks! -guy33 -- View this message in context: http://r.789695.n4.nabble.com/Fitting-spline-using-Pspline-tp3559202p3559202.html Sent from the R help mailing list archive at Nabble.com.