Update additions terms used in formulas of brms. See
addition-terms for details.
update_adterms(formula, adform, action = c("update", "replace"))Two-sided formula to be updated.
One-sided formula containing addition terms to update
formula with.
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.
An object of class formula.
form <- y | trials(size) ~ x
update_adterms(form, ~ trials(10))
#> y | trials(10) ~ x
#> <environment: 0x114efb9e0>
update_adterms(form, ~ weights(w))
#> y | trials(size) + weights(w) ~ x
#> <environment: 0x114efb9e0>
update_adterms(form, ~ weights(w), action = "replace")
#> y | weights(w) ~ x
#> <environment: 0x114efb9e0>
update_adterms(y ~ x, ~ trials(10))
#> y | trials(10) ~ x
#> <environment: 0x114efb9e0>