You need to paste() together a formula. There's an example in ?formula. Try,
n <- 10 rhs <- paste("x", 1:n, collapse = "+", sep = "") lhs <- "y ~" f <- as.formula(paste(lhs, rhs)) Then pass `f' into lm(). -roger _______________________________ UCLA Department of Statistics [EMAIL PROTECTED] http://www.stat.ucla.edu/~rpeng On Wed, 2 Apr 2003, Richard Nixon wrote: > Hello folks, > > Any ideas how to do this? > > data.frame is a data frame with column names "x1",...,"xn" > y is a response variable of length dim(data.frame)[1] > > I want to write a function > > function(y, data.frame){ > lm(y~x1+...+xn) > } > > This would be easy if n was always the same. > If n is arbitrary how could I feed the x1+...+xn terms into lm(response~terms)? > > Thanks > Richard > > -- > Dr. Richard Nixon > MRC Biostatistics Unit, Cambridge, UK > http://www.mrc-bsu.cam.ac.uk/personal/richard > Tel: +44 (0)1223 330382, Fax: +44 (0)1223 33038 > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help