[R] Is this a bug?

[Achim Zeileis]

Answer: No.

On Tue, 1 Sep 2009, Worik R wrote:

> This programme
>
> for(T in 1:3){
>  for(j in 1:(5-1)){
>    for(k in (j+1):5){
>      for(l in (j+2):5){
>        print(paste("1 JKL:", j,k,l,sep=" "))
>      }
>    }
>  }
> }
>
> Prints out (among other things)
> [1] "1 JKL: 4 5 6"
>
> That is for(l in (j+2):5) sets l to 6 one more than the upper limit.

Check out help(":") which explains that in from:to from is the starting 
value and to is the end value. Note that it does not impose that
from <= to or that to is the upper limit.

For j = 4, you get l to be in 6:5.
Z

> cheers
> Worik
>
> 	[[alternative HTML version deleted]]
>
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