vector</a></span><span class="op">(</span><span class="va">m</span><span class="op">)</span>, <span class="fl">1</span> <span class="op">-</span> <span class="fl">0.05</span>, names <span class="op">=</span> <span class="cn">FALSE</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span>  <span class="co"># remove 0s from the sparse matrix</span></span></span>
<span class="r-in"><span>  <span class="va">m</span> <span class="op">&lt;-</span> <span class="fu">Matrix</sp