model.matrix.heckit5rob {ssmrob}

Design Matrix of Switching Regression Model

Description

Create design matrix of switching regression model

Usage

## S3 method for class 'heckit5rob'
model.matrix(object, part = "outcome", ...)

Arguments

object

object of class heckit5rob

part

character string indicating which matrix to extract: "outcome" for the outcome equations, "selection" for the selection equation.

...

currently not used

Value

If argument part is "outcome", the list containing design matrices of the outcome equations is returned.

stage21

design matrix for the first regime

stage22

design matrix for the second regime

If argument part is "selection", the design matrix of the selection equation is returned.

Author(s)

Mikhail Zhelonkin