Is the input the empty model?

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Description

Checks to see if the input is the empty model.

Usage

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assert_is_empty_model(x, severity = getOption("assertive.severity", "stop"))

assert_is_non_empty_model(x, severity = getOption("assertive.severity",
  "stop"))

is_empty_model(x, .xname = get_name_in_parent(x))

is_non_empty_model(x, .xname = get_name_in_parent(x))

Arguments

x

Input to check.

severity

How severe should the consequences of the assertion be? Either "stop", "warning", "message", or "none".

.xname

Not intended to be used directly.

Value

is_[non_]empty_model returns TRUE if the input is an [non] empty model. (has_terms is used to determine that a variable is a model object.) The model is considered empty if there are no factors and no intercept. The assert_* functions return nothing but throw an error if the corresponding is_* function returns FALSE.

See Also

is.empty.model and is_empty.

Examples

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