haven_labelled_defined: Semantic labelled vector class

In dataset: Create Data Frames for Exchange and Reuse

Semantic labelled vector class

Description

The class haven_labelled_defined represents a semantically enriched labelled vector created by defined.

Objects of this class inherit from:

• haven::labelled for numeric, character, and factor data;

• Date for temporal dates;

• POSIXct and POSIXt for timestamps;

• logical for boolean data.

The class tag enables S3 method dispatch for:

• as_character

• as_numeric

• as_logical

• as.Date

• as.POSIXct

• print.haven_labelled_defined

• summary.haven_labelled_defined

Users normally do not construct this class directly; it is returned as the result of calling defined.

Value

No value is returned. This documentation page exists so that the class can be referenced in help topics.

dataset documentation built on Nov. 16, 2025, 5:06 p.m.