lt.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">rsk</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="subset-rsk-method-1.png" alt="" width="700" height="700"></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op