R: Extracting the Model Frame from a Formula or Fit

model.frame {stats}

R Documentation

Extracting the Model Frame from a Formula or Fit

Description

model.frame (a generic function) and its methods return a data.frame with the variables needed to use formula and any ... arguments.

Usage

model.frame(formula, ...)

## Default S3 method:
model.frame(formula, data = NULL,
           subset = NULL, na.action = na.fail,
           drop.unused.levels = FALSE, xlev = NULL, ...)

## S3 method for class 'aovlist'
model.frame(formula, data = NULL, ...)

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

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

get_all_vars(formula, data, ...)

Arguments

`formula`	a model `terms` object or an R object.
`data`	a data.frame, list or environment (or object coercible by `as.data.frame` to a data.frame), containing the variables in `formula`. Neither a matrix nor an array will be accepted.
`subset`	a specification of the rows to be used: defaults to all rows. This can be any valid indexing vector (see