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,
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 <-l
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,
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 onl
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$d
Any other ideas?
Thanks,
Michael
On Sat, Oct 18, 2008 at 5:
Henrique,
This code below from a R-help helper worked.
> dat <-data.frame(f)
> dat2<-dat[dat$d<0,]
> dat.lm <-lm(c~d, data=dat2)
Thanks again,
Michael Just
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
> "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$d<0,]
>> dat.lm <-lm(c~d, data=dat2)
But Henrique's advice, of using 'sub
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