[R] pass additional parameters to function

Weiwei Shi helprhelp at gmail.com
Fri Oct 20 00:57:49 CEST 2006


thanks a lot!

On 10/19/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> f <- function(f1, ...) {
>   args <- list(...)
>   lapply(args, print)
>  f1(...)
> }
> f(sin, pi)
>
>
> On 10/19/06, Weiwei Shi <helprhelp at gmail.com> wrote:
> > how do i assign "1" or "2" to some destination variable?
> > i mean, how do i use something to represent ... in the defn. of f?
> >
> > On 10/19/06, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> > > Try this:
> > >
> > > f <- function(f1, ...) f1(...)
> > > f(sin, 1)
> > > f(max, 1, 2)
> > >
> > >
> > > On 10/19/06, Weiwei Shi <helprhelp at gmail.com> wrote:
> > > > Hi,
> > > >
> > > > I have a function like this:
> > > >
> > > > f <- function(f1) { ...}
> > > >
> > > > f1 is a function name itself.
> > > > I have two candidates for f1, and each of them have different numbers
> > > > of arguments, say
> > > > f2 has 2 while f3 has 3.
> > > >
> > > > then my question is, how to write f function so that I can pass
> > > > different funcation names with different number of parameters?
> > > >
> > > > thanks.
> > > >
> > > > --
> > > > Weiwei Shi, Ph.D
> > > > Research Scientist
> > > > GeneGO, Inc.
> > > >
> > > > "Did you always know?"
> > > > "No, I did not. But I believed..."
> > > > ---Matrix III
> > > >
> > > > ______________________________________________
> > > > R-help at stat.math.ethz.ch 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.
> > > >
> > >
> >
> >
> > --
> > Weiwei Shi, Ph.D
> > Research Scientist
> > GeneGO, Inc.
> >
> > "Did you always know?"
> > "No, I did not. But I believed..."
> > ---Matrix III
> >
>


-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III



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