


<dt>PX</dt>
<dd><p>another data.frame where the first column is only used</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>distance between X and PX</p>
    </div>

    <div id="ref-examples">
    <h2>Examples</h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="kw">if</span><span class="op">(</span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">require</a></span><span class="op">(</span><span cl