R: Update Formula Addition Terms

update_adterms {brms} | R Documentation

## Update Formula Addition Terms

### Description

Update additions terms used in formulas of brms. See `addition-terms` for details.

### Usage

    update_adterms(formula, adform, action = c("update", "replace"))

### Arguments

`formula` | Two-sided formula to be updated.
`adform` | One-sided formula containing addition terms to update `formula` with.
`action` | Indicates what should happen to the existing addition terms in `formula`. If `"update"` (the default), old addition terms that have no corresponding term in `adform` will be kept. If `"replace"`, all old addition terms will be removed.

### Value

An object of class `formula`.

### Examples

    form <- y | trials(size) ~ x
    update_adterms(form, ~ trials(10))
    update_adterms(form, ~ weights(w))
    update_adterms(form, ~ weights(w), action = "replace")
    update_adterms(y ~ x, ~ trials(10))

[Package brms version 2.17.0 Index]