mapnik/tests/data/good_maps/text_rotation.xml

<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over" background-color="steelblue" minimum-version="0.7.2">

    <Style name="labels">
        <Rule title="foo">
            <Filter>([name]='CHILE')</Filter>
            <TextSymbolizer size="15" orientation="45" face-name="DejaVu Sans Book" halo-radius="1">'45˚ angle'</TextSymbolizer>
        </Rule>
        <Rule title="foo">
            <Filter>([name]='Australia')</Filter>
            <TextSymbolizer size="15" orientation="-45" face-name="DejaVu Sans Book" halo-radius="1">'- 45˚ angle'</TextSymbolizer>
        </Rule>
        <Rule title="foo1">
            <Filter>([name]='Brazil')</Filter>
            <TextSymbolizer size="15" orientation="90" face-name="DejaVu Sans Book" halo-radius="1">'90˚ angle'</TextSymbolizer>
        </Rule>
        <Rule title="foo">
            <Filter>([name]='Mongolia')</Filter>
            <TextSymbolizer size="15" orientation="-90" face-name="DejaVu Sans Book" halo-radius="1">'- 90˚ angle'</TextSymbolizer>
        </Rule>
        <Rule title="foo">
            <Filter>([name]='South Sudan')</Filter>
            <TextSymbolizer size="15" orientation="180" face-name="DejaVu Sans Book" halo-radius="1">'180&#730; angle'</TextSymbolizer>
        </Rule>
        <Rule title="foo">
            <Filter>([name]='United States')</Filter>
            <TextSymbolizer size="15" face-name="DejaVu Sans Book" halo-radius="1">'no rotation of text'</TextSymbolizer>
        </Rule>
        <Rule title="foo">
            <ElseFilter/>
            <TextSymbolizer size="15" face-name="DejaVu Sans Book" halo-radius="1">[name]</TextSymbolizer>
        </Rule>
    </Style>

    <Layer name="point" srs="+init=epsg:4326">
        <StyleName>labels</StyleName>
        <Datasource>
            <Parameter name="type">sqlite</Parameter>
            <Parameter name="file">../sqlite/qgis_spatiallite.sqlite</Parameter>
            <Parameter name="geometry_field">geometry</Parameter>
            <Parameter name="table">point</Parameter>
        </Datasource>
    </Layer>
    
</Map>