modelr: model_matrix – R documentation

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model_matrix

Construct a design matrix

Description

This is a thin wrapper around stats::model.matrix() which returns a tibble. Use it to determine how your modelling formula is translated into a matrix, an thence into an equation.

Usage

model_matrix(data, formula, ...)

Arguments

`data`	A data frame
`formula`	A modelling formula
`...`	Other arguments passed onto `stats::model.matrix()`

Value

A tibble.

Examples

model_matrix(mtcars, mpg ~ cyl)
model_matrix(iris, Sepal.Length ~ Species)
model_matrix(iris, Sepal.Length ~ Species - 1)

modelr

Modelling Functions that Work with the Pipe

v0.1.8

GPL-3

Authors

Hadley Wickham [aut, cre], RStudio [cph]

Initial release