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Geoserver in the SLD stylized layer descriptor is what it means, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, hope you can gain something.

SLD stylized layer descriptor (Styled Layer Descriptor) is a standard proposed by OGC in 2005. This standard allows WMS servers to expand the representation of map visualization under certain conditions. Before SLD, maps could only be visualized using styles that were already specified on the server. When using the SLD standard, it allows us to define our own style and hierarchical display of the map from the client, which greatly expands the flexibility of map visualization.

The SLD- specification uses XML to define the map display style, through custom SLD to configure the visualization style of map layer rendering, you can set filters, customize legends and so on. Rule is the most important element of SLD because it allows data sets to be classified according to a given parameter (using a filter), and all important parameters related to classification must be set in the rule element.

For custom styles that use SLD for maps, you must use the SE (Symbology Encoding) standard in conjunction with it. SE is another standard of OGC, which is also based on the XML schema, which allows us to customize different symbol styles to express different features on the map. SLD files use this language so that the map service can interpret user-defined styles when the map is rendered.

In Geoserver, to define the style of layers, you need to configure the layer style of xml and bring some configured layer styles in Geoserver, which is different from arcmap, which sets the style directly according to the visual interface, but it also supports sld style in arcgis, which is the standard of ogc after all.

Sld configuration, point, line and surface are different, and the parameters in the configuration are also different. For more information, please refer to the official documentation of Geoserver. It is also convenient for the open source tool udig to configure sld style.

In the development of Geoserver, we can dynamically generate a layer style, transfer it to the geoserver background through the program, and dynamically change the layer style according to the front-end parameters, so that the front-end display of the layer style is different.

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