R: Add predictors to a formula

add_predictors {modelr} | R Documentation

## Add predictors to a formula

### Description

This merges a one- or two-sided formula `f` with the right-hand sides of all formulas supplied in `...`.

### Usage

    add_predictors(f, ..., fun = "+")

### Arguments

`f` | A formula.
`...` | Formulas whose right-hand sides will be merged to `f`.
`fun` | A function name indicating how to merge the right-hand sides.

### Examples

    f <- lhs ~ rhs
    add_predictors(f, ~var1, ~var2)

    # Left-hand sides are ignored:
    add_predictors(f, lhs1 ~ var1, lhs2 ~ var2)

    # fun can also be set to a function like "*":
    add_predictors(f, ~var1, ~var2, fun = "*")

[Package modelr version 0.1.1 Index]