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2011 Jun 12
3
Running a GMM Estimation on dynamic Panel Model using plm-Package
...nts" I need for the model.
In order to estimate it, I tried the following code:
>
> library(plm)
>
> test <- pgmm(Y ~ lag(Y, 1) + X1 + X2 + X3 | lag(Y, 1), data=Model,
> effect="individual", model="onestep")
>
>
I tried "Model" as "Modelp <- pdata.frame(..." and as "Model <-
read.table(..." but in both cases there?s an error-massage:
Error in solve.default(Reduce("+", A2)) :
System ist f?r den Rechner singul?r: reziproke Konditionszahl =
4.08048e-22
Error in solve.default(Reduce("+", A2)...