search for: allgva

Hi All, I am using R 2.11.0 on a Ubuntu machine. I have a time series data set and want to run rolling regressions with it. Any suggestions would be useful. Here are the details: (1) I convert relevant variables into time series objects and compute first differences: vad <- ts(data$ALLGVA/data$GDPDEF, start=1948, frequency=1) emp <- ts(data$ALLEMP, start=1948, frequency=1) vad.dif1 <- diff(vad) emp.dif1 <- diff(emp) (2) I make a data set: d <- ts.union(emp.chng=emp.dif1,lag.emp.chng=lag(emp.dif1,-1),twolag.emp.chng=lag(emp.dif1,-2), vad.chng=vad.dif1,lag.vad.chng=lag(...