get_isbn_13_check_digit

Takes a string representation of an ISBN 13
and returns the check digit that satisfies the necessary condition.
It can take a 13 digit string (and ignore the already extant check digit)
or a 12 digit string (without the last digit)

Provides functions for validating and normalizing bibliographic
codes such as ISBN, ISSN, and LCCN. Also includes functions to communicate
with the WorldCat API, translate Call numbers (Library of Congress and
Dewey Decimal) to their subject classifications or subclassifications,
and provides various loadable data files such call number / subject
crosswalks and code tables.

Tony Fischetti

libbib

Various Utilities for Library Science/Assessment and Cataloging

get_isbn_13_check_digit function

<dl><dt>x</dt>
<dd>A string of 12 or 13 digits</dd>
<dt>allow.hyphens</dt>
<dd>A logical indicating whether the hyphen
separator should be allowed
(default is <code>FALSE</code>)</dd>
<dt>errors.as.nas</dt>
<dd>return NA if error instead of throwing error
(default is <code>FALSE</code>)</dd></dl>

Arguments

Get ISBN 13 check digit — get_isbn_13_check_digit

<dl>

<dt>x</dt>
<dd>A string of 12 or 13 digits</dd>


<dt>allow.hyphens</dt>
<dd>A logical indicating whether the hyphen
separator should be allowed
(default is <code>FALSE</code>)</dd>


<dt>errors.as.nas</dt>
<dd>return NA if error instead of throwing error
(default is <code>FALSE</code>)</dd>

</dl>

get_isbn_13_check_digit: Get ISBN 13 check digit

Description

Usage

Value

Arguments

Examples