[R] return(x=x,y=y,prob=prob) hasn't been used in R now?

[Peter Dalgaard]

zhijie zhang wrote:
> Dear friends,
>  Now, when i use the argument return(x=x,y=y,prob=prob) , R  displays the
> waring message:
> Warning message:
> The return value for multiple variables wasn't used  in: return(x = x, y =
> gy, prob = prob)
>  I used the methods of  "help.search("return")" and "?return" to get some
> help, but didn't find info on it.
>  Anybody knows how it should be used correctly?
>   
Return(value) takes only one argument. To return a list, 
return(list(x=x,y=y,prob=prob))

I bet the author of help(return) thought that this was implied clearly 
enough.

> #EXAMPLES
> a<-function(x,y,z)
>  {
>   gx<-seq(1,10,length.out=20)
>   gy<-gx
>   prob<-matrix(20,20)
>   for (i in 1:20)
>    {
>     for (j in 1:20)
>      {
>       prob<-0.1
>      }
>    }
>  return(x=gx,y=gy,prob=prob)
>  }
>
> a(1,1,1)  # the warning message will display
>  Thanks.
>
>   


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