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tobacco
2009 May 29
1
error message in plm
Hi everyone,
Could anyone tell me what means the follow error message
Error in xj[i] : invalid subscript type 'closure'
It happens when I run the function plm, like this:
>ff<-totaccz~lactivoz+varvolnegz
>ss<-plm(ff,data=regaccdis,na.omit)
Error in xj[i] : invalid subscript type 'closure'
> coef(ss)
(Intercept) lactivoz varvolnegz
0.02571212 6.94227541 0.10340165
Thank you,
Cec?lia (Universidade de Aveiro - Portugal)