ode> with a <code>POLYGON</code> or <code>MULTIPOLYGON</code> geometry type.</p></td>
    </tr>
    <tr>
      <th>x_name</th>
      <td><p>A name of the column with regions/clusters names.</p></td>
    </tr>
    <tr>
      <th>y_name</th>
      <td><p>A name of the column with regions/clusters names.</p></td>
    </tr>
    <tr>
      <th>precision</th>
      <td><p>numeric; see st_as_binary for how to do this.</p></td>
    </tr>
    </table>
    
    <h2 class="hasAnchor" id="value"><a class="anchor" href=