p">+</span> <span class="va">x5</span> <span class="op">+</span> <span class="va">x6</span>,</span>
<span class="r-in">                    weight_method<span class="op">=</span><span class="st">"ps"</span><span class="op">)</span></span>
<span class="r-in"><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="va">adj</span><span class="op">)</span></span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span 