ons to specified thinning proportions</span></span></span>
<span class="r-in"><span><span class="va">empirical_propvec</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/colSums.html" class="external-link">colMeans</a></span><span class="op">(</span><span class="va">thout</span><span class="op">$</span><span class="va">mat</span><span class="op">)</span> <span class="op">/</span> <span class="va">lambda</span></span></span>
<span class="r-in"><span><span class="va">specifi