.io/r/graphics/abline.html" class="external-link">abline</a></span><span class="op">(</span>h <span class="op">=</span> <span class="fl">170</span>, lty <span class="op">=</span> <span class="fl">3</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="colored_dots-7.png" alt="" width="700" height="433"></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># horiz version:</span></span></span>
<span class="r-in"><span><span class="fu"><a href="htt