>(</span></span>
<span>  <span class="va">formula</span>,</span>
<span>  data <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  family <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/stats/family.html" class="external-link">gaussian</a></span><span class="op">(</span><span class="op">)</span>,</span>
<span>  ziformula <span class="op">=</span> <span class="op">~</span><span class="fl">0</span>,</span>
<span>  dispformula <span class="op">=</span> <span class="op">~