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Checks if model has an intercept.

Usage

has_intercept(x, verbose = TRUE)

Arguments

x

A model object.

verbose

Toggle warnings.

Value

TRUE if x has an intercept, FALSE otherwise.

Examples

model <- lm(mpg ~ 0 + gear, data = mtcars)
has_intercept(model)
#> [1] FALSE

model <- lm(mpg ~ gear, data = mtcars)
has_intercept(model)
#> [1] TRUE

if (require("lme4")) {
  model <- lmer(Reaction ~ 0 + Days + (Days | Subject), data = sleepstudy)
  has_intercept(model)

  model <- lmer(Reaction ~ Days + (Days | Subject), data = sleepstudy)
  has_intercept(model)
}
#> [1] TRUE