Example of an SLD style

SLD (Styled Layer Descriptor) format is an OGC (Open Geospatial Consortium) standard ideal for describing the style of map layers. Below are a few examples of its implementation for Geoconcept Web vector layers. To find out more about this standard consult http://www.opengeospatial.org/standards/sld

[Tip] Tip

To enable display of objects as a function of the value of a field, as in the examples that follow, it is necessary to activate them in the definition of the fields of the vector layers, by clicking on Show.

Example 1: display of a line as a function of the value of a field
gcweb-reference-img/guide-reference/annexes-sld-01.png

The "societe" field has a value of "CVG" or "CICG".

<sld:StyledLayerDescriptor xmlns:sld="http://www.opengis.net/sld" version="1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml">
        <sld:NamedLayer>
                <sld:Name/>
                <sld:UserStyle>
                        <sld:Name>Style</sld:Name>
                        <sld:IsDefault>1</sld:IsDefault>
                        <sld:FeatureTypeStyle>
                                <sld:Rule>
                                        <ogc:Filter>
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>societe</ogc:PropertyName>
                                                        <ogc:Literal>CVG</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>12</sld:MaxScaleDenominator>
                                        <sld:LineSymbolizer>
                                                <sld:Stroke>
                                                        <sld:CssParameter name="stroke">#000000</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-opacity">1</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-width">2</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-linecap">round</sld:CssParameter>
                                                </sld:Stroke>
                                        </sld:LineSymbolizer>
                                </sld:Rule>
                                <sld:Rule>
                                        <ogc:Filter>
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>societe</ogc:PropertyName>
                                                        <ogc:Literal>CICG</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>12</sld:MaxScaleDenominator>
                                        <sld:LineSymbolizer>
                                                <sld:Stroke>
                                                        <sld:CssParameter name="stroke">#990099</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-opacity">1</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-width">2</sld:CssParameter>
                                                        <sld:CssParameter name="stroke-linecap">round</sld:CssParameter>
                                                </sld:Stroke>
                                        </sld:LineSymbolizer>
                                </sld:Rule>
                        </sld:FeatureTypeStyle>
                </sld:UserStyle>
        </sld:NamedLayer>
</sld:StyledLayerDescriptor>
Example 2: display of a point as a function of the value of a field
gcweb-reference-img/guide-reference/annexes-sld-02.png

The "genre_de_client" field has a value of "", "Consommateur" or "En attente".

<sld:StyledLayerDescriptor xmlns:sld="http://www.opengis.net/sld" version="1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml">
        <sld:NamedLayer>
                <sld:Name/>
                <sld:UserStyle>
                        <sld:Name>Style</sld:Name>
                        <sld:IsDefault>1</sld:IsDefault>
                        <sld:FeatureTypeStyle>
                                <sld:Rule>
                                        <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>genre_de_client</ogc:PropertyName>
                                                        <ogc:Literal/>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>9</sld:MaxScaleDenominator>
                                        <sld:PointSymbolizer>
                                                <sld:Graphic>
                                                        <sld:ExternalGraphic>
                                                                <sld:OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple" xlink:href="/geoconcept-web/Image/showImage.do?id=290"/>
                                                                <sld:Format>image/png</sld:Format>
                                                                <sld:GraphicXOffset>-15</sld:GraphicXOffset>
                                                                <sld:GraphicYOffset>-15</sld:GraphicYOffset>
                                                        </sld:ExternalGraphic>
                                                        <sld:Opacity>1</sld:Opacity>
                                                        <sld:Size>30</sld:Size>
                                                </sld:Graphic>
                                        </sld:PointSymbolizer>
                                </sld:Rule>
                                <sld:Rule>
                                        <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>genre_de_client</ogc:PropertyName>
                                                        <ogc:Literal>Consommateur</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>9</sld:MaxScaleDenominator>
                                        <sld:PointSymbolizer>
                                                <sld:Graphic>
                                                        <sld:ExternalGraphic>
                                                                <sld:OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple" xlink:href="/geoconcept-web/Image/showImage.do?id=289"/>
                                                                <sld:Format>image/png</sld:Format>
                                                                <sld:GraphicXOffset>-10</sld:GraphicXOffset>
                                                                <sld:GraphicYOffset>-10</sld:GraphicYOffset>
                                                        </sld:ExternalGraphic>
                                                        <sld:Opacity>1</sld:Opacity>
                                                        <sld:Size>20</sld:Size>
                                                </sld:Graphic>
                                        </sld:PointSymbolizer>
                                </sld:Rule>
                                <sld:Rule>
                                        <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>genre_de_client</ogc:PropertyName>
                                                        <ogc:Literal>En attente</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>9</sld:MaxScaleDenominator>
                                        <sld:PointSymbolizer>
                                                <sld:Graphic>
                                                        <sld:Mark>
                                                                <sld:WellKnownName>square</sld:WellKnownName>
                                                                <sld:Fill>
                                                                        <sld:CssParameter name="fill">#FFFF00</sld:CssParameter>
                                                                </sld:Fill>
                                                                <sld:Stroke>
                                                                        <sld:CssParameter name="stroke">#000000</sld:CssParameter>
                                                                        <sld:CssParameter name="stroke-width">1</sld:CssParameter>
                                                                </sld:Stroke>
                                                        </sld:Mark>
                                                        <sld:Size>20</sld:Size>
                                                </sld:Graphic>
                                        </sld:PointSymbolizer>
                                </sld:Rule>
                        </sld:FeatureTypeStyle>
                </sld:UserStyle>
        </sld:NamedLayer>
</sld:StyledLayerDescriptor>
Example 3: display text sourced by fields on objects
gcweb-reference-img/guide-reference/annexes-sld-03.png

The "statut" field has a value of "Vert" or "Violet". Text labels displayed are sourced by the "delai_projete" and "source_d_energie" fields. 

<?xml version="1.0" encoding="UTF-8"?>
<sld:StyledLayerDescriptor xmlns:sld="http://www.opengis.net/sld" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0.0" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd">
        <sld:NamedLayer>
                <sld:Name>Note</sld:Name>
                <sld:UserStyle>
                        <sld:Name>Style</sld:Name>
                        <sld:IsDefault>1</sld:IsDefault>
                        <sld:FeatureTypeStyle>
                                <sld:Rule>
                                        <ogc:Filter>
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>statut</ogc:PropertyName>
                                                        <ogc:Literal>Vert</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>9</sld:MaxScaleDenominator>
                                        <sld:PointSymbolizer>
                                                <sld:Graphic>
                                                        <Mark>
                                                                <WellKnownName>circle</WellKnownName>
                                                                <Fill>
                                                                        <CssParameter name="fill">#00FF00</CssParameter>
                                                                </Fill>
                                                        </Mark>
                                                        <Size>24</Size>
                                                </sld:Graphic>
                                                <sld:Label>
                                                        <ogc:PropertyName>delai_projete</ogc:PropertyName>
                                                        <![CDATA[
           ]]>
                                                        <ogc:PropertyName>source_d_energie</ogc:PropertyName>
                                                </sld:Label>
                                                <Fill>
                                                        <CssParameter name="fill">#000000</CssParameter>
                                                </Fill>
                                                <Font>
                                                        <CssParameter name="font-size">10</CssParameter>
                                                </Font>
                                                <LabelPlacement>
                                                        <Displacement>
                                                                <DisplacementX>0</DisplacementX>
                                                                <DisplacementY>15</DisplacementY>
                                                        </Displacement>
                                                </LabelPlacement>
                                        </sld:PointSymbolizer>
                                </sld:Rule>
                                <sld:Rule>
                                        <ogc:Filter>
                                                <ogc:PropertyIsEqualTo>
                                                        <ogc:PropertyName>statut</ogc:PropertyName>
                                                        <ogc:Literal>Violet</ogc:Literal>
                                                </ogc:PropertyIsEqualTo>
                                        </ogc:Filter>
                                        <sld:MinScaleDenominator>1</sld:MinScaleDenominator>
                                        <sld:MaxScaleDenominator>9</sld:MaxScaleDenominator>
                                        <sld:PointSymbolizer>
                                                <sld:Graphic>
                                                        <Mark>
                                                                <WellKnownName>circle</WellKnownName>
                                                                <Fill>
                                                                        <CssParameter name="fill">#9020FF</CssParameter>
                                                                </Fill>
                                                        </Mark>
                                                        <Size>24</Size>
                                                </sld:Graphic>
                                                <sld:Label>
                                                        <ogc:PropertyName>delai_projete</ogc:PropertyName>
                                                        <![CDATA[
           ]]>
                                                        <ogc:PropertyName>source_d_energie</ogc:PropertyName>
                                                </sld:Label>
                                                <Fill>
                                                        <CssParameter name="fill">#000000</CssParameter>
                                                </Fill>
                                                <Font>
                                                        <CssParameter name="font-size">10</CssParameter>
                                                </Font>
                                                <LabelPlacement>
                                                        <Displacement>
                                                                <DisplacementX>0</DisplacementX>
                                                                <DisplacementY>15</DisplacementY>
                                                        </Displacement>
                                                </LabelPlacement>
                                        </sld:PointSymbolizer>
                                </sld:Rule>
                        </sld:FeatureTypeStyle>
                </sld:UserStyle>
        </sld:NamedLayer>
</sld:StyledLayerDescriptor>
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