[R] Reversal of Aggregation

Dear all, given I have a data.frame in a format like this mydf - data.frame(age=rep(1:3,5), year=c(rep(1996,3), rep(1997,3), rep(1998,3), rep(1999,3), rep(2000,3)), income=1:15) mydf Now I convert it to some 2D-frequency table like

Re: [R] Reversal of Aggregation

On Mon, 29 Jan 2007, Roland Rau wrote: Dear all, given I have a data.frame in a format like this mydf - data.frame(age=rep(1:3,5), year=c(rep(1996,3), rep(1997,3), rep(1998,3), rep(1999,3), rep(2000,3)), income=1:15) mydf

Re: [R] Reversal of Aggregation

This is what I was hoping for! Thanks, Roland On 1/29/07, Achim Zeileis [EMAIL PROTECTED] wrote: On Mon, 29 Jan 2007, Roland Rau wrote: Dear all, given I have a data.frame in a format like this mydf - data.frame(age=rep(1:3,5), year=c(rep(1996,3),

Re: [R] Reversal of Aggregation

Or equivalently: as.data.frame.table(mymatrix) On 1/29/07, Achim Zeileis [EMAIL PROTECTED] wrote: On Mon, 29 Jan 2007, Roland Rau wrote: Dear all, given I have a data.frame in a format like this mydf - data.frame(age=rep(1:3,5), year=c(rep(1996,3),