Try this: dat.lm <-lm(c~d, subset=d < 0)
On Sat, Oct 18, 2008 at 7:03 PM, Michael Just <[EMAIL PROTECTED]> wrote: > Hello, > I was wondering if there was a way to only select cases my from data > frame that contained a negative value? > >> c<-c(1,2,3,4,5,6,7,8,9,10) >> d<- c(-1,2,-3,-4,5,6,-7,8,-9,10) >> f <- cbind(c,d) >> dat <-data.frame(f) >> dat.lm <-lm(c~d) > > If I wanted to only use the rows that had a negative value in column d > for my regression, how could I make that selection? > > Thanks, > Michael Just > > ______________________________________________ > 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.
