source: trunk/examples/zoo/unirect2d/README @ 3714

The <unirect2d> element is deprecated in favor of the <mesh>.
See the mesh example under examples/zoo/mesh.

If you already are using a <unirect2d> element, you should convert it to use
the <mesh> element.  For example,

  <unirect2d>
    <about>
        <label>unirect2d mesh</label>
    </about>
    <dim>2</dim>
    <units>m</units>
    <hide>yes</hide>
    <xaxis>
        <min>0.0</min>
        <max>1.0</max>
        <numpoints>50</numpoints>
    </xaxis>
    <yaxis>
        <min>0.0</min>
        <max>1.0</max>
        <numpoints>50</numpoints>
    </yaxis>
  </unirect2d>

should be converted to 

  <mesh>
    <about>
        <label>uniform grid mesh</label>
    </about>
    <dim>2</dim>
    <units>m</units>
    <hide>yes</hide>
    <grid>
        <xaxis>
            <min>0.0</min>
            <max>1.0</max>
            <numpoints>50</numpoints>
        </xaxis>
        <yaxis>
            <min>0.0</min>
            <max>1.0</max>
            <numpoints>50</numpoints>
        </yaxis>
    </grid>
  </mesh>

See the mesh documentation for more information.

  https://nanohub.org/infrastructure/rappture/wiki/rp_xml_ele_mesh