colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>x3p</th>
      <td><p>a file in x3p format as return by function read_x3p</p></td>
    </tr>
    </table>
    
    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>data frame with variables x, y, and value</p>
    

    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='fu'>data</span>(<span clas