Hi Ondrej, What documentation have you looked at? Does this help at all?
require(splines) ?ns ## one example summary(lm(y ~ ns(x, df = 3), data = data.frame(y = runif(100), x = rbinom(100, 9, .25)^2))) ## built in examples example(ns) Also, I am very fond of the book, Modern Applied Statistics with S by Venables & Ripley. It has a section on splines that might help you. Cheers, Josh 2011/5/4 Ondřej Mikula <onmik...@gmail.com>: > Dear R-helpers, > I need to fit natural cubic spline with specified number of knots. I > expected 'splines' package will be helpful, but I am confused by its > help. Is more detailed documentation available for it or could you > recommend another R function? > Best regards > Ondrej Mikula > > ______________________________________________ > 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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.
