les will be created.</p>
<p>A <code>function</code> will be called with a single argument,
the plot data. The return value must be a <code>data.frame</code>, and
will be used as the layer data. A <code>function</code> can be created
from a <code>formula</code> (e.g. <code>~ head(.x, 10)</code>).</p></dd>


<dt id="arg-geom">geom<a class="anchor" aria-label="anchor" href="#arg-geom"></a></dt>
<dd><p>The geometric object to use display the data; override the
default.</p></dd>


<dt id="arg-position">position<