<a href="https://rdrr.io/r/base/as.data.frame.html" class="external-link">as.data.frame</a></span><span class="op">(</span><span class="va">Y</span><span class="op">[</span>,<span class="op">-</span><span class="fl">1</span><span class="op">]</span><span class="op">)</span>, <span class="va">refit</span>, object<span class="op">=</span><span class="va">fit1</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> boundary (singular) fit: s