plm (version 2.4-3)

has.intercept: Check for the presence of an intercept in a formula or in a fitted model

Description

The presence of an intercept is checked using the formula which is either provided as the argument of the function or extracted from a fitted model.

Usage

has.intercept(object, ...)
# S3 method for default
has.intercept(object, ...)
# S3 method for formula
has.intercept(object, ...)
# S3 method for Formula
has.intercept(object, rhs = NULL, ...)
# S3 method for panelmodel
has.intercept(object, ...)
# S3 method for plm
has.intercept(object, rhs = 1L, ...)

Arguments

object

a formula, a Formula or a fitted model (of class plm or panelmodel),

…

further arguments.

rhs

an integer (length > 1 is possible), indicating the parts of right hand sides of the formula to be evaluated for the presence of an intercept or NULL for all parts of the right hand side (relevant for the Formula and the plm methods)

Value

a logical