     210   240
## 4     3 chr2      300   350    NA &lt;NA&gt;       NA    NA
## 5     4 chr3      400   450    NA &lt;NA&gt;       NA    NA</code></pre>
<div class="sourceCode" id="cb17"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb17-1" data-line-number="1">fuzzyjoin<span class="op">::</span><span class="kw"><a href="https://www.rdocumentation.org/packages/fuzzyjoin/topics/genome_join">genome_join</a></span>(x1, x2, <span class="dt">by=</span><span class="kw"><a href="h