quot; variable exist with a 0 value.
Thank you very much for your help.
Sorry for this silly questions.
Kenneth
El mar, 24-03-2009 a las 07:07 -0400, Duncan Murdoch escribió:
> On 24/03/2009 12:44 AM, Kenneth Roy Cabrera Torres wrote:
> > Hi R developers and debian users:
> >
&
Hi R developers and debian users:
Finally I found how to work with aggregate() function
on the last patched version fo R.
I you use this command it fails:
aggregate(state.x77, list(Region = state.region), mean)
But if you modify it in this way, it works!:
aggregate(state.x77, list(Region =