例如:这里有一个类似的草地功能:
- id、区域、级别
- 1,几何形状,24
- 2,几何形状,56
我不想写一个根据属性级别显示颜色的sld文件,比如这样:
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor version="1.0.0" xmlns="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc"
xmlns:xlink="http://www.w3.org/1999/xlink" 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">
<NamedLayer>
<Name>grass</Name>
<UserStyle>
<Name>grass</Name>
<Title>grass polygon</Title>
<Abstract>grass fill with level</Abstract>
<FeatureTypeStyle>
<Rule>
<PolygonSymbolizer>
<Fill>
<CssParameter name="fill">rgb(**level**, 0, 255)</CssParameter>
</Fill>
<Stroke />
</PolygonSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
查看分类和插值函数:http://docs.geoserver.org/latest/en/user/styling/sld-tipstricks/transformation-func.html