model.frame.selection: Data of Selection Models

In sampleSelection: Sample Selection Models

Data of Selection Models

Description

Return the variables used for estimating a sample selection model

Usage

## S3 method for class 'selection'
model.frame(formula, ... )

Arguments

formula	object of class selection.
...	further arguments passed to other methods (e.g. model.frame or model.frame.binaryChoice).

Value

A data.frame containing all variables used for the estimation. The “terms” attribute contains the terms for the selection equation.

Author(s)

Arne Henningsen

See Also

model.frame, selection, model.matrix.selection, and selection-methods.

sampleSelection documentation built on Jan. 20, 2026, 3:01 a.m.