[R] Please, remind a function name

[Gabor Grothendieck]

You could use the class dispatching mechanism:


mymodel <- function(a, b, method = "S") {
	.Class <- method
	NextMethod("mymodel")
}

mymodel.S <- function(a, b, method = "S") cat("S:", a, b, method, "\n")
mymodel.HK <- function(a, b, method = "S") cat("HK:", a, b, method, "\n")

mymodel(1:3, 1:4)
mymodel(1:3, 1:4, "S")
mymodel(1:3, 1:4, "HK")



On 5/22/07, Vladimir Eremeev <wl2776 at gmail.com> wrote:
>
> Sorry, I'm stuck. :)
>
> I am writing a function, which would fit either one linear model or another
> one, depending on its argument model.type.
> And I don't want to use several if's, because R allows doing it with much
> more beauty.
>
> That is I am looking for prettier alternative to the following
>
> AB2C<-function(a,b,model.type="S") { # or HK, and return NULL if this
> argument has any other value
> [ do some stuff]
>
>  if(model.type=="S") model<-lm( [s.model formula] )
>  else if (model.type == "HK") model<-lm([hk.model formula])
>  else model<-NULL
>
>  return(model)
> }
>
> I was looking at "switch", but didn't come to solution. Sorry <:)
>
> --
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