ent called <code>newdata</code> which takes a data frame of predictors.</p></li>
</ul><p><strong>If your model type is not in the above list</strong>, you may still be able to use the <code><a href="add_draws.html">add_draws()</a></code>
function to turn matrices of predictive draws (or fit draws) into tidy data frames. Or,
you can wrap output from a prediction function in <code><a href="https://mc-stan.org/posterior/reference/rvar.html" class="external-link">posterior::rvar()</a></code> and add it
to a dat