filter_domain: Get a filter's domain

In cohortBuilder: Data Source Agnostic Filtering Tools

Get a filter's domain

Description

Returns the declared domain (universe of valid values) attached to a filter, or 'NULL' when no domain is set. This is a thin accessor over the 'domain' property, intended for downstream consumers (e.g. GUIs) that render filter inputs from the domain without reaching into S7 internals.

Usage

filter_domain(filter)

Arguments

filter

S7 filter object.

Value

The filter's domain, or 'NULL' when unset. Structure depends on the filter type (e.g. a character vector for discrete filters, a two-element vector for range filters).

See Also

[filter_effective_value()], [cb_intersect_domain()]

cohortBuilder documentation built on July 3, 2026, 9:07 a.m.