Yes,

that's this.

Thank you very much.



2012/7/20 Peter Ehlers [via R] <ml-node+s789695n4637212h6@n4.nabble.com>

> On 2012-07-20 04:05, carla moreira wrote:
>
> >
> > Hi,
> >
> > I would like to evaluate a function, with 3 arguments, for instance,
> >
> > myfunc<-function(a,b,c) { sqrt(a)-exp(b)+4*c
> >                                                  }
> >
> > How to execute  myfunc(x,y,z), for all x, all y and all z, where x,y,z
> are
> > vectors?
>
> Is this what you have in mind:
>
>    myfunc <- function(a, b, c){ sqrt(a)-exp(b)+4*c }
>    myfunc2 <- function(x){
>      a <- x[1]
>      b <- x[2]
>      c <- x[3]
>      myfunc(a, b, c)
>    }
>
>    x <- c(1, 4, 9)
>    y <- 1:2
>    z <- c(10, -10, 2, 20)
>    d <- expand.grid(x, y, z)
>    d$value <- apply(d, 1, myfunc2)
>
> ?
>
> Peter Ehlers
>
> >
> > Thank you very much in advance
> >
> >
> >
> > --
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> >
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> > 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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-- 
Carla Moreira




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