base/system.file.html" class="external-link">system.file</a></span><span class="op">(</span><span class="st">"extdata/Strelka-SBS-vcf"</span>,</span></span>
<span class="r-in"><span>                      <span class="st">"Strelka.SBS.GRCh37.s1.vcf"</span>,</span></span>
<span class="r-in"><span>                      package <span class="op">=</span> <span class="st">"ICAMS"</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">df</span> <span class=