[R] Extracting the knots of a natural cubic spline fit

Dear list members, I am trying to fit a natural cubic spline to my dataset using the ns function in the splines package. Specifically, I do: library(splines) lm(y ~ ns(x, df=3), data =data) How do I extract the values of the interior knots of the fitted spline ? Thanks, Rajat

[R] returning a list of functions

Hi interested readers, I have a function that creates several functions within a loop and I would like them to be returned for further use as follows: Main.Function(df,...){ # df is a multivariate data funcList<-list(NULL) for (i in 1:ncol(df)){ temp<-logspline(df[,i],...) # logspline density es

[R] Thank You All for the help

Hi All, I wish to thank all you guys out there. This is because of the help from you guys I am able to learn how to use R in a short time. Thanking you again for the help and quick responses. Regards, Rajat -- Rajat, PhD student Industrial Engineering, Texas Tech University, Lubbock, TX, USA

[R] Unable to mark labels

I am solving the following question. I want to label the data. I used the following code. > data82 <- read.table(file="/home/rajat/R/8_2_rtg.txt",header=T) > data82 <- data.frame(data82) > data82 low_sat med_sat high_sat contact housing 1 65 54 100