I want to use an external SLD (hosted in my server) for symbolizing a raster in GeoServer.

The SLD below works if used as default style in GeoServer. If I copy it (changing some colors) and put outside GeoServer, save as SLD (or XML), and call the GetMap with SLD=https://my_server/mySLD.sld the map I get is still with the 'default, Geoserver' style

<StyledLayerDescriptor version="1.0.0" 
xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd" 
                           <ColorMapEntry color="#E69800" label="1" opacity="0.0" quantity="0.0"/>                     
                            <ColorMapEntry color="#1b4bde" label="Building" opacity="1.0" quantity="1.0"/>
                            <ColorMapEntry color="#bcbcbc" label="Ground cover" opacity="1.0" quantity="2.0"/>

shortly, WMS call would be like this (also tried withou STYLES param) https://my_geoserver_url/wms?service=WMS&version=1.1.0&request=GetMap&layers=my_schema:my_layer&STYLES=&SLD=https://my_server/my_sld.sld&transparent=true&bbox=...&format=image/png

I did this for dynamic filtering in vector data and all good (SLDs are created dynamically via PHP), so I am wondering if the problem is that with RASTER data is not possible

1 Answer 1


When the style is used in GeoServer, it gets stripped of everything but the first UserStyle/NamedStyle, and that part is used to render the layer, blindly (that's not conforming to standard, but also the behavior GeoServer had for the past 15-20 years, everyone relies on it).

When using a remote style instead, you get the full standard compliant treatment instead. Long story short, your Style must have a NamedLayer matching your layer name and must be marked as the default style. See the library mode documentation for more details

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