duplicated2

a vector, a data frame or a matrix

The native <a href="/link/duplicated?package=questionr&version=0.7.7" data-mini-rdoc="questionr::duplicated">duplicated</a> function determines which elements of a vector 
or data frame are duplicates of elements already observed in the vector or the
data frame provided. Therefore, only the second occurence (or third or nth)
of an element is considered as a duplicate.
<code>duplicated2</code> is similar but will also mark the first occurence as a 
duplicate (see examples).

Set of functions to make the processing and analysis of
surveys easier : interactive shiny apps and addins for data recoding,
contingency tables, dataset metadata handling, and several convenience
functions.

Julien Barnier

questionr

Functions to Make Surveys Processing Easier

François Briatte

Joseph Larmarange

duplicated2 function

<dl><dt>x</dt>
<dd>a vector, a data frame or a matrix</dd></dl>

Arguments

The native <a href='https://rdrr.io/r/base/duplicated.html'>duplicated</a> function determines which elements of a vector 
or data frame are duplicates of elements already observed in the vector or the
data frame provided. Therefore, only the second occurence (or third or nth)
of an element is considered as a duplicate.
<code>duplicated2</code> is similar but will also mark the first occurence as a 
duplicate (see examples).

Determine all duplicate elements — duplicated2

<dl>

<dt>x</dt>
<dd>a vector, a data frame or a matrix</dd>

</dl>

duplicated2: Determine all duplicate elements

Description

Usage

Value

Arguments

See Also

Examples