Works for me. dat.lm <-lm(c~d, data = dat, subset=d < 0)
Please see if you have dat with d and c columns names. On Sat, Oct 18, 2008 at 7:18 PM, Michael Just <[EMAIL PROTECTED]> wrote: > Henrique, > Thanks for the rapid response. I tried the following to no avail: > >> dat.lm <-lm(c~d, dat=dat, subset= d <0) > Error in eval(expr, envir, enclos) : invalid 'envir' argument >> dat.lm <-lm(c~d, dat=dat, subset= (d <0)) > Error in eval(expr, envir, enclos) : invalid 'envir' argument >> dat.lm <-lm(c~d, dat=dat, subset= c(d <0)) > Error in eval(expr, envir, enclos) : invalid 'envir' argument > > Any other suggestions? > Thanks, > Michael Just > > On Sat, Oct 18, 2008 at 5:15 PM, Henrique Dallazuanna <[EMAIL PROTECTED]> > wrote: >> 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 >> > -- 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.
