That works perfectly, thank you very much Michael,
Sincere regards,
Charles
On Fri, May 25, 2012 at 11:59 AM, R. Michael Weylandt <
michael.weyla...@gmail.com> wrote:
> You'll have to be a little trickier if you want it to be smart and
> pick up the name: [or I'm missing something obvious]
>
> yourFunc <- function(x){
> dsx <- deparse(substitute(x))
> x <- length(unique(x))
> names(x) <- dsx
> x
> }
>
> yourFunc(ID)
>
> yourFunc(ID^2)
>
> yourFunc(ID[ID==2])
>
>
> etc.
>
> Hope this helps,
> M
>
> On Fri, May 25, 2012 at 12:42 PM, Charles Determan Jr <deter...@umn.edu>
> wrote:
> > Thank you Michael,
> >
> > However, this only provides the number of groups without a column
> label. Is
> > there a way to have it give the count with the 'ID' label?
> >
> > Regards,
> > Charles
> >
> > On Fri, May 25, 2012 at 10:52 AM, R. Michael Weylandt
> > <michael.weyla...@gmail.com> wrote:
> >>
> >> length(unique(ID))
> >>
> >> Michael
> >>
> >> On Fri, May 25, 2012 at 11:38 AM, Charles Determan Jr <deter...@umn.edu
> >
> >> wrote:
> >> > Hello,
> >> >
> >> > Simple question that I am stuck on and can't seem to find an answer in
> >> > the
> >> > help files currently. I have a list which contains repeated ID's. I
> >> > would
> >> > like to have R count the number of ID's. For example:
> >> >
> >> > ID=c(1,1,1,1,2,2,2,2,3,3,3,3)
> >> > as.data.frame(ID)
> >> >
> >> > Clearly, there are 3 groups. How would I have R give me the summary:
> >> >
> >> > ID
> >> > 3
> >> >
> >> > Many thanks,
> >> > Charles
> >> >
> >> > [[alternative HTML version deleted]]
> >> >
> >> > ______________________________________________
> >> > 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.
> >
> >
>
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