I am trying to get labels to follow the linestring. I have inserted the following sld text into a geoserver style, but the label is displayed at the horizontally at linestring centroid
<sld:TextSymbolizer>
<sld:Geometry>
<ogc:Function name="centroid">
<ogc:PropertyName>shape</ogc:PropertyName>
</ogc:Function>
</sld:Geometry>
<sld:Label>
<ogc:PropertyName>road_name</ogc:PropertyName>
</sld:Label>
<sld:Font>
<sld:CssParameter name="font-family">MS Shell Dlg 2</sld:CssParameter>
<sld:CssParameter name="font-size">6.0</sld:CssParameter>
<sld:CssParameter name="font-style">normal</sld:CssParameter>
<sld:CssParameter name="font-weight">normal</sld:CssParameter>
</sld:Font>
<sld:LabelPlacement>
<sld:LinePlacement>
<sld:PerpendicularOffset>10.0</sld:PerpendicularOffset>
</sld:LinePlacement>
</sld:LabelPlacement>
<Halo>
<Radius>
<ogc:Literal>2</ogc:Literal>
</Radius>
<Fill>
<CssParameter name="fill">#FFFFFF</CssParameter>
<CssParameter name="fill-opacity">0.85</CssParameter>
</Fill>
</Halo>
<sld:Fill>
<sld:CssParameter name="fill">#000000</sld:CssParameter>
</sld:Fill>
<sld:VendorOption name="followLine">true</sld:VendorOption>
</sld:TextSymbolizer>
I thought that by adding the VendorOption -> "followLine" the label would be displayed inline with the line. Is there something that i have missed in the documentation to make this work?