mod.matrix {pamfe} | R Documentation |
This is an internal function of package pamfe
based on the model.matrix.pFormula
function from package plm
. It enables the specified transformation of the model matrix in a pam
, currently only a first-difference transformation is supported. Not normally called directly.
mod.matrix(object, data, model = c("within", "fd"), ...)
object |
An object of class |
data |
A |
model |
Estimation method of fixed effects panel data model. Currently only first differences (" |
... |
Further arguments. |
A model matrix after the specified transformation.
Peter Puetz ppuetz@uni-goettingen.de