Build the filter clause that expresses a set of selected marks.
Returns undefined when the selection cannot be expressed as a filter — an
empty selection, an aggregate artifact (no dimension), or a selection that
only contains producer-supplied overflow buckets. The caller clears the
clause instead of writing a clause that would silently match everything.
Build the filter clause that expresses a set of selected marks.
Returns
undefinedwhen the selection cannot be expressed as a filter — an empty selection, an aggregate artifact (no dimension), or a selection that only contains producer-supplied overflow buckets. The caller clears the clause instead of writing a clause that would silently match everything.