pecified by</p>
<ul>
<li>position, e.g. <code>1:4, 7, 5, 4</code>,</li>
<li>name, e.g. <code>class</code>, <code>age</code>, <code>sex</code>, <code>aede1:aede3</code> or</li>
<li>selector, e.g. <code>starts_with("aede")</code>, see <code><a href="https://tidyselect.r-lib.org/reference/language.html" class="external-link">?tidyselect::select_helpers</a></code>
</li>
</ul>
<p>or any combination thereof. Variables can be selected multiple times and will then be included in the data and the resulting plot m