Have a look at "nam[com[1,1]]" , You're regressing
against a character. Try
mod<-lm(y~dat[, com[1,1]],data=dat)
--- Daniel O'Shea <[EMAIL PROTECTED]> wrote:
> I am trying to refer to a variable name in a lm
> regression where the variable name is in another
> variable, but it does seem to work
On Dec 30, 2007, at 12:49 PM, Daniel O'Shea wrote:
> I am trying to refer to a variable name in a lm regression where
> the variable name is in another variable, but it does seem to
> work. Here is an example:
>
> y<-rnorm(10)
> dat<-data.frame(x1=rnorm(10),x2=rnorm(10),x3=rnorm(10))
> nam<-c
I am trying to refer to a variable name in a lm regression where the variable
name is in another variable, but it does seem to work. Here is an example:
y<-rnorm(10)
dat<-data.frame(x1=rnorm(10),x2=rnorm(10),x3=rnorm(10))
nam<-c('x1','x2','x3')
library(gtools)
com<-combinations(3,2,1:3)
mod<-lm(
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