s makes it much simpler to pass predictions to, e.g., further summary or plotting functions.</p>
<p>Additionally the vast majority of methods allow the passing of an <code>at</code> argument, which can be used to obtain predicted values using modified version of <code>data</code> held to specific values:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw"><a href="reference/prediction.html">prediction</a></span>(x, <span class="dt">at =</span> <span class="kw"><