code></a></small>
    <div class="hidden name"><code>number_of_features.Rd</code></div>
    </div>

    <div class="ref-description">
    <p>Extract the number of features in an object.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">number_of_features</span><span class="op">(</span><span class="va">x</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># S4 method for ProjectProblem</span></span>
<span><span 