td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Creates a new piano roll from AR, corresponding to type : simplePianoRoll -&gt; basic piano roll trajectoryPianoRoll -&gt; every event is graphically linked to the previous one. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table class="params">
    <tr><td class="paramname">PianoRollType</td><td>the piano roll type </td></tr>
    <tr><td class="paramname">arh</td><td>an AR handler </td></tr