Re: [R] Select only cases with negative values
MJ == Michael Just [EMAIL PROTECTED] on Sat, 18 Oct 2008 17:26:02 -0400 writes: MJ Henrique, MJ This code below from a R-help helper worked. dat -data.frame(f) dat2-dat[dat$d0,] dat.lm -lm(c~d, data=dat2) But Henrique's advice, of using 'subset= d 0' was really better (in most respects I'd say). If it really did not work for you, you have a strange (or broken?) R environment. Again back to your example c - 1:10 d - c(-1,2,-3,-4,5,6,-7,8,-9,10) f - cbind(c,d) dat - data.frame(f) rm(c,d,f) ## check to make sure 'c' or 'd' are not picked up from GlobalEnv [MM] ## daN.lm -lm(c ~ d, data = dat, subset = d 0) summary(daN.lm) Does this really not work for you? Martin Maechler, ETH Zurich MJ Thanks again, MJ Michael Just MJ On Sat, Oct 18, 2008 at 5:22 PM, Henrique Dallazuanna [EMAIL PROTECTED] wrote: 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. __ 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.
[R] Select only cases with negative values
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.
Re: [R] Select only cases with negative values
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.
Re: [R] Select only cases with negative values
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 __ 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.
Re: [R] Select only cases with negative values
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.
Re: [R] Select only cases with negative values
Am 18.10.2008 um 23:03 schrieb Michael Just: 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? untested: dat[dat$d 0, ] __ 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.
Re: [R] Select only cases with negative values
Johannes, Thanks for the response. However, ... dat.neg - dat[dat$d 0, ] Error in dat[dat$d 0, ] : incorrect number of dimensions In addition: Warning message: $ operator is deprecated for atomic vectors, returning NULL in: dat$d Any other ideas? Thanks, Michael On Sat, Oct 18, 2008 at 5:18 PM, Johannes Hüsing [EMAIL PROTECTED] wrote: Am 18.10.2008 um 23:03 schrieb Michael Just: Hello, I was wondering if there was a way to only select cases my from data frame that contained a negative value? c-c(1,2,3,4,5,6,7,8,9,10) d- c(-1,2,-3,-4,5,6,-7,8,-9,10) f - cbind(c,d) dat -data.frame(f) dat.lm -lm(c~d) If I wanted to only use the rows that had a negative value in column d for my regression, how could I make that selection? untested: dat[dat$d 0, ] __ 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.
