Mapnik XML for Bathy Blending

gistfile1.txt

<Map srs="+proj=merc +lon_0=100 +lat_ts=-41 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs" background-color="#2a383e">


  <Style name="niwa_twofifty_hs" comp-op="color-dodge">
    <Rule>
      <RasterSymbolizer scaling="bilinear" default-mode="linear" default-color="rgba(0, 0, 0, 0)">
	  <stop value="0" color="#222222"/> 
	  <stop value="255" color="#ebebeb"/></RasterSymbolizer>
    </Rule>
  </Style>
  <Layer name="niwa_twofifty_hs" srs="+proj=merc +lon_0=100 +lat_ts=-41 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs">
      <StyleName>niwa_twofifty_hs</StyleName>
      <Datasource>
         <Parameter name="file">/RegionalBathymetry2008_HS.tif</Parameter>
         <Parameter name="band">1</Parameter>
         <Parameter name="type">gdal</Parameter>
      </Datasource>
  </Layer>


  <Style name="niwa_twofifty_deuce" comp-op="color-dodge">
    <Rule>
      <RasterSymbolizer scaling="bilinear" default-mode="linear" default-color="rgba(0, 0, 0, 0)" opacity="0.75">
	  <stop value="-200" color="#e7f0ef"/> 
	  <stop value="0" color="#88b3ac"/> 
	  <stop value="350" color="rgba(0, 0, 0, 0)"/></RasterSymbolizer>
    </Rule>
  </Style>
  <Layer name="niwa_twofifty" srs="+proj=merc +lon_0=100 +lat_ts=-41 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs">
      <StyleName>niwa_twofifty_deuce</StyleName>
      <Datasource>
         <Parameter name="file">/RegionalBathymetry2008.tif</Parameter>
         <Parameter name="band">1</Parameter>
         <Parameter name="type">gdal</Parameter>
      </Datasource>
  </Layer>


  <Style name="niwa_twofifty" comp-op="multiply" >
    <Rule>
      <RasterSymbolizer scaling="bilinear" default-mode="linear" default-color="rgba(0, 0, 0, 0)">
	  <stop value="-101" color="rgba(0, 0, 0, 0)"/> 
	  <stop value="-100" color="#ffffff"/> 
	  <stop value="10070" color="#000000"/></RasterSymbolizer>
    </Rule>
  </Style>
  <Layer name="niwa_twofifty" srs="+proj=merc +lon_0=100 +lat_ts=-41 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs">
    <StyleName>niwa_twofifty</StyleName>
    <Datasource>
       <Parameter name="file">/RegionalBathymetry2008.tif</Parameter>
       <Parameter name="band">1</Parameter>
       <Parameter name="type">gdal</Parameter>
    </Datasource>
  </Layer>

</Map>