Dear all,

I have a function f(x).
> ptm <- proc.time()
> y=f(x)
> proc.time() - ptm

works fine for me.

However it is not possible to write

> system.time(y=f(x))

and

> system.time(f(x))

does not store the value of f(x).

Should I prefer the 3 lines with proc.time ?

Thank you very much,
Gustave



2010/5/4 Joris Meys <jorism...@gmail.com>

> ?system.time can help too.
>
> On Tue, May 4, 2010 at 11:07 PM, pdb <ph...@philbrierley.com> wrote:
>
> >
> > Hi,
> > I want to time how long a function takes to execute. Any clues on what to
> > search for to achieve this?
> >
> > Thanks in advance.
> > --
> > View this message in context:
> > http://r.789695.n4.nabble.com/timing-a-function-tp2126319p2126319.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
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> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> Joris Meys
> Statistical Consultant
>
> Ghent University
> Faculty of Bioscience Engineering
> Department of Applied mathematics, biometrics and process control
>
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>
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