255))
will be used.</p></td>
    </tr>
    <tr>
      <th>xlim</th>
      <td><p>the x limits (x1, x2) of the plot. <code>NULL</code> indicates that
the range of values to be plotted will define limits.</p></td>
    </tr>
    <tr>
      <th>ylim</th>
      <td><p>the y limits (x1, x2) of the plot.</p></td>
    </tr>
    </table>

    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>A plot showing species ranges on top of a environmental variable.</p>

    <h2 class="ha