mapnik/benchmark/data/roads.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map[]>
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over" background-color="#dfd8c9">

<Style name="marking" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways')</Filter>
    <LineSymbolizer stroke="#ffffff" stroke-width="1.8" stroke-dasharray="5, 5" />
  </Rule>
</Style>
<Style name="fill" filter-mode="first">
  <Rule>
    <Filter>([class] = 'minorroads')</Filter>
    <LineSymbolizer stroke-width="2.5" stroke="#ffffff" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'mainroads')</Filter>
    <LineSymbolizer stroke-width="4" stroke="#ff9999" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'motorways')</Filter>
    <LineSymbolizer stroke-width="6" stroke="#ff6666" stroke-linecap="round" />
  </Rule>
  <Rule>
    <Filter>([class] = 'railways')</Filter>
    <LineSymbolizer stroke-width="3" stroke="#333333" stroke-linecap="round" />
  </Rule>
</Style>
<Style name="bridge" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways') and ([bridge] = 1)</Filter>
    <LineSymbolizer stroke-width="6" stroke="#ffffff" />
  </Rule>
</Style>
<Style name="casing" filter-mode="first">
  <Rule>
    <Filter>([class] = 'railways') and ([bridge] = 1)</Filter>
    <LineSymbolizer stroke-width="8" stroke="#333333" />
  </Rule>
  <Rule>
    <Filter>([class] = 'minorroads')</Filter>
    <LineSymbolizer stroke-width="3" stroke="#a69269" />
  </Rule>
  <Rule>
    <Filter>([class] = 'mainroads')</Filter>
    <LineSymbolizer stroke-width="5" stroke="#ff0000" />
  </Rule>
  <Rule>
    <Filter>([class] = 'motorways')</Filter>
    <LineSymbolizer stroke-width="8" stroke="#990000" />
  </Rule>
</Style>
<Style name="labels">
  <Rule>
    <TextSymbolizer halo-rasterizer="fast" placement="line" face-name="DejaVu Sans Book" halo-radius="2" allow-overlap="true">[type]</TextSymbolizer>
  </Rule>
</Style>
<Layer name="layer"
  srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
    <StyleName>casing</StyleName>
    <StyleName>bridge</StyleName>
    <StyleName>fill</StyleName>
    <StyleName>marking</StyleName>
    <StyleName>labels</StyleName>
    <Datasource>
       <!--
         ogr2ogr -f CSV tests/visual_tests/data/roads.csv -lco GEOMETRY=AS_WKT tests/visual_tests/data/grouped-rendering.sqlite roads -sql "SELECT fid,geometry, type, tunnel, bridge, oneway, class, z_order, CAST((z_order / 10.0) AS INTEGER) AS z FROM roads ORDER BY z_order"
        -->
       <Parameter name="file">./roads.csv</Parameter>
       <Parameter name="type">csv</Parameter>
    </Datasource>
  </Layer>

</Map>