Sorry, couldn't resist...
From: Gabor Grothendieck>
> ov$vn1 is not a variable. It is the result of applying the $
> function to the ov and vn1 arguments.
... which would suggest: get("$")(get("ov"),
"vn1"). 8-)
Andy
> For example, using BOD which is a data frame that comes with
> R, rather than get("BOD$Time") use
get("BOD")[["Time"]]
>
> On 4/26/06, Thomas Davidoff <davidoff at haas.berkeley.edu> wrote:
> > I don't understand what my error is in the following:
> > I need to use the get command on a series of variables, but
> can't for
> > some reason that I don't understand. Why am I told no such
> variable
> > as ov$vn1 after getting a summary report on that very variable?
> > > summary(ov$vn1)
> > Min. 1st Qu. Median Mean 3rd Qu. Max. NA's
> > 1.0 25.0 81.0 468.1 450.0 159100.0 6050.0
> > > dvars <- paste("ov$dvn", 1:4, sep="")
> > > vars <-
c("ov$vn1","ov$vn2","ov$vn3","ov$vn4")
> > > summary(get(vars[1]))
> > Error in get(x, envir, mode, inherits) : variable "ov$vn1"
was not
> > found Execution halted
> >
> >
> >
> > Thomas Davidoff
> > Assistant Professor
> > Haas School of Business
> > UC Berkeley
> > Berkeley, CA 94618
> > Phone: (510) 643-1425
> > Fax: (510) 643-7357
> > email: davidoff at haas.berkeley.edu
> > web: http://faculty.haas.berkeley.edu/davidoff/
> >
> > ______________________________________________
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> > PLEASE do read the posting guide!
> > http://www.R-project.org/posting-guide.html
> >
>
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