Re: [R] Aggregate issues with subset

I don't have R on this machine to check but are you sure that sc_recov still exists in s.all? Otherwise do str(s.all) and see what the object looks like. --- On Wed, 10/1/08, Michael Just <[EMAIL PROTECTED]> wrote: > From: Michael Just <[EMAIL PROTECTED]> > Subject: [R

[R] Aggregate issues with subset

Hello, I used the aggregate function with success on my data frame "all". > aggregate(all, list(sc_recov), mean) I then made a subset of this data frame: >s.all <-subset(all, select= c(3,4,5,6,7,8,9,10,11,23)) but when I tried to to run the aggregate function on this subset: > aggregate(s.all,