</span><span class="op">-</span><span class="fl">91</span>, <span class="op">-</span><span class="fl">92</span><span class="op">)</span></span>
<span><span class="fu"><a href="../reference/missing_values.html">missing_range</a></span><span class="op">(</span><span class="va">x2</span><span class="op">)</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="op">-</span><span class="fl">91</span>, <s