 </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>L</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Convert theta index to angle for Driscoll and Healy sampling.</p>
<dl class="section note"><dt>Note</dt><dd><ul>
<li>t ranges from [0 .. 2*L-1] =&gt; 2*L points in (0,pi).</li>
<