> Would be grateful if somebody helped me understand this error message after
> trying to run a panel data:
> PanelData <- read.xls("/Users/Bahman/Desktop/Taylor
> # Panel Data regresson for all countrys.
>> Answer <- plm(NOM.INT.RATE ~ INFL + TARGET.INFL +
>> DEVIATION.FROM.TARGET.INFL + NOM.INT.RATE , data=PanelData,
>> duplicate couples (time-id)
> Error in pdim.default(index[], index[]) :
> What does this error mean? What am I doing wrong?
I never used that package and have not looked into it, but reading the
message suggests that you have at least one id appearing at least twice
at the same time?