c</a></span>(<span class="st">"chromosome"</span>, <span class="st">"start"</span>, <span class="st">"end"</span>))</a></code></pre></div>
<pre><code>## # A tibble: 4 x 3
##   chromosome start   end
##   &lt;fct&gt;      &lt;int&gt; &lt;int&gt;
## 1 chr1           1    99
## 2 chr1         151   199
## 3 chr1         251   399
## 4 chr2           1   299</code></pre>
</div>
<div id="genome_join" class="section level2">
<h2 class="hasAnchor">
<a href="#genome_join" class="anchor"></a>genome_join</h2>
<p>Clas