[R] riv-package, how to deal with missing values?

[Jan Störger]

Hello everyone!

I want to calculate an instrumental variable estimator using the
riv-package:

riv(Y,Xex,Xend,W,method="classical") 

and my problem is that I either get an error because missing values are
not allowed in the matrices or when I exclude NA's from the matrices it
says that matrices have to be at the same length. Is there a special
option how to deal with missing values when using the riv-package?

Thanks to everyone how might be able to help!

Jan Störger
Mannheim University