iv>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
    <dl><dt>...</dt>
<dd><p>common discrete scale parameters: <code>name</code>, <code>breaks</code>,
<code>labels</code>, <code>na.value</code>, <code>limits</code> and <code>guide</code>.  See
<code><a href="discrete_scale.html">discrete_scale</a></code> for more details</p></dd>


<dt>values</dt>
<dd><p>a set of aesthetic values to map data values to.  If this
is a named