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Remove random walk terms from a formula object

Source: R/formula-tools.R
remove_rw_terms.Rd

This function removes random walk terms denoted using rw() from a formula so that they can be processed on their own.

Usage

remove_rw_terms(formula)

Arguments

formula

A model formula that may use standard fixed effects, random effects using lme4 syntax (see re()), and random walks defined using the rw() helper function. See the Details section below for a comprehensive explanation of the supported syntax.

Value

A formula object with the random walk terms removed.

Reference

This function was adapted from code written by J Scott (under an MIT license) as part of the epidemia package (https://github.com/ImperialCollegeLondon/epidemia/).

See also

Functions used to help convert formulas into model designs ar(), arima(), arima_terms(), arma(), as_string_formula(), construct_arima(), construct_gp(), construct_re(), construct_rw(), enw_formula(), enw_manual_formula(), gp(), gp_terms(), ma(), parse_formula(), re(), remove_arima_terms(), remove_gp_terms(), rw(), rw_terms(), split_formula_to_terms()

Examples

epinowcast:::remove_rw_terms(~ 1 + age_group + location)
#> ~1 + age_group + location
#> <environment: 0x56336e0d6d78>

epinowcast:::remove_rw_terms(~ 1 + age_group + location + rw(week, location))
#> ~1 + age_group + location
#> <environment: 0x56336e074f60>