Pascal A. Niklaus <[EMAIL PROTECTED]> wrote:
> I repeatedly encounter the following problem: After importing a data set
> into a data frame, I wish to set a column with numeric values to be a
> factor, but can't figure out how to do this. Also, I do not wish to
> write as.factor(x) all the time.
Your problem is with scoping, not the conversion per se:
> > attach(ngrad)
> > is.factor(STNW)
> [1] FALSE
At this moment, STNW is the same as ngrad$STNW
> > ngrad$STNW<-factor(STNW) ## doesn't work
Yes it does work, try looking at is.factor(ngrad$STNW)
> > is.factor(STNW)
> [1] FALSE
Af
On Wed, 5 Nov 2003, Pascal A. Niklaus wrote:
> Hi all,
>
> I repeatedly encounter the following problem: After importing a data set
> into a data frame, I wish to set a column with numeric values to be a
> factor, but can't figure out how to do this. Also, I do not wish to
> write as.factor(x)
