[R] Need help with plm, cannot load pdata.frame

From: Edward Huang <huangce_at_gmail.com>
Date: Thu, 13 Mar 2008 15:43:53 -0700

Hi all,

I installed all required packages for plm, but pdata.frame is not a recognized function on R to start with.

I followed the first page of "introduction to plm" by Croissant&Millo, Here are the messages:
> library(plm)

Loading required package: kinship
Loading required package: survival
Loading required package: splines
Loading required package: nlme
Loading required package: lattice

> library(Ecdat)
> data(Produc)
> pdata.frame(Produc,"state","year","pprod")
Error: could not find function "pdata.frame"*

I've tried the same codes on both PC and MAC with R 2.6.2. Neither of the systems worked.

Please help. Thanks.


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