bread.gmnl: Bread for Sandwiches
Description
Computes the ``bread'' of the sandwich covariance matrix for objects of class gmnl.
Usage
# S3 method for gmnl
bread(x, ...)
Arguments
x
a fitted model of class gmnl.
...
other arguments when bread is applied to another
class object.
Value
The covariance matrix times observations
Details
For more information see bread from the package sandwich.
References
Zeileis A (2006), Object-oriented Computation of Sandwich
Estimators. Journal of Statistical Software, 16(9), 1--16.