does this explain it?
> groups <- factor(c(rep("Z",5),rep("X",5),rep("Y",5)))
>
> groups
[1] Z Z Z Z Z X X X X X Y Y Y Y Y
Levels: X Y Z
> as.integer(groups)
[1] 3 3 3 3 3 1 1 1 1 1 2 2 2 2 2
> c(1,2,3)[groups]
[1] 3 3 3 3 3 1 1 1 1 1 2 2 2 2 2
>
On 4/14/06, Sasha Pustota <[EMAIL PROTECTED]> wrote:
>
> Sasha Pustota <[EMAIL PROTECTED]> wrote:
> > Berton Gunter <[EMAIL PROTECTED]> wrote:
> > > plot(myscores[,1:2],pch=c('s','c','v')[groups])
> >
> > Thanks, this works. How to understand the result of
> > the expression
> >
> > > c(1,2,'3)[groups]
> > [1] 3 3 3 3 3 1 1 1 1 1 2 2 2 2 2
> >
> > where
> >
>
> > > groups <- factor(c(rep("X",5), rep("Y",5), rep("Z",5)))
>
> bzz... this should be
>
> > groups <- factor(c(rep("Z",5),rep("X",5),rep("Y",5)))
>
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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390 (Cell)
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What the problem you are trying to solve?
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