setkeyv256

<code>setkey</code> for raw columns

Uses raw vectors to minimize memory consumption of categorical
variables with fewer than 256 unique values. Useful for analysis of large
datasets involving variables such as age, years, states, countries, or
education levels.

Hugh Parsonage

factor256

Use Raw Vectors to Minimize Memory Consumption of Factors

setkeyv256 function

<dl><dt>DT</dt>
<dd>A <code>data.table</code>.</dd>
<dt>cols</dt>
<dd>Column names as in <code><a href="https://Rdatatable.gitlab.io/data.table/reference/setkey.html">data.table::setkeyv</a></code></dd></dl>

Arguments

setkey for raw columns — setkeyv256

<dl>

<dt>DT</dt>
<dd>A <code>data.table</code>.</dd>


<dt>cols</dt>
<dd>Column names as in <code><a href='https://Rdatatable.gitlab.io/data.table/reference/setkey.html'>data.table::setkeyv</a></code></dd>

</dl>

setkeyv256: `setkey` for raw columns

Description

Usage

Value

Arguments