is_first_edition: First Edition Identification

is_first_editionR Documentation

First Edition Identification

Description

Identify potential first editions

Usage

is_first_edition(df)

Arguments

df

data.frame with the fields: author, title, publication_year

Details

Identifies unique title-author combinations and marks the earliest occurrence as first edition.

Value

Logical vector indicating the potential first editions

Author(s)

Leo Lahti leo.lahti@iki.fi

References

See citation("bibliographica")

Examples

## Not run: fed <- is_first_edition(df)

rOpenGov/bibliographica documentation built on April 10, 2022, 8:51 p.m.