ning file to determine attributes.</span>
<span class="co">#&gt; File attributes:</span>
<span class="co">#&gt;   meta lines: 252</span>
<span class="co">#&gt;   header_line: 253</span>
<span class="co">#&gt;   variant count: 432</span>
<span class="co">#&gt;   column count: 2513</span>
<span class="co">#&gt; </span>
Meta line <span class="dv">252</span> read in.
<span class="co">#&gt; All meta lines processed.</span>
<span class="co">#&gt; gt matrix initialized.</span>
<span class="co">#&gt; Character matr