hillshade.xml

<!-- renders: http://cl.ly/0t3p3D0a320x0I0M2o2S -->

<Map srs="+init=epsg:4269">

    <Style name="terrain">
        <Rule>
          <RasterSymbolizer>
            <!-- http://trac.mapnik.org/wiki/RasterColorizer -->
            <RasterColorizer default-mode="linear">
              <stop color="#35A86E" value = "1003"/>
              <stop color="#FBFF80" value = "1800"/>
              <stop color="#E06C1F" value = "2800"/>
              <stop color="#C83737" value = "3500"/>
              <stop color="#D7F3F3" value = "4397"/>
            </RasterColorizer>
          </RasterSymbolizer>
        </Rule>
    </Style>

    <Datasource name="terrain">
        <Parameter name="type">gdal</Parameter>
        <Parameter name="band">1</Parameter>
        <Parameter name="base">../../data/</Parameter>
    </Datasource>

    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_17672037.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_35378829.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_68314046.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_82481338.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_23900111.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_56441553.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_81400742.bil</Parameter>
        </Datasource>
    </Layer>
    <Layer name="hillshade" srs="+init=epsg:4269">
        <StyleName>terrain</StyleName>
        <Datasource base="terrain">
            <Parameter name="file">NED_98513935.bil</Parameter>
        </Datasource>
    </Layer>

</Map>