GeoServer SLD – Implementing SLD in OpenLayers

geoserveropenlayerssld

i have some vector layers in geoserver with style (SLD)

When i add these layers though OL3 i want to use same SLD.

right now i am giving style to layer as below

style: new ol.style.Style({
                    stroke: new ol.style.Stroke({
                      color: '#f00',
                      width: 1
                    }),
                    fill: new ol.style.Fill({
                      color: 'rgba(255,0,0,0.1)'
                    })
                  })

How can i get the same SLD which is present for the layer in geoserver and use in OL3?

Best Answer

Openlayers 3 does not yet have an SLD parser

There's an open issue at https://github.com/openlayers/ol3/issues/2954 that you may +1

Related Solutions

[GIS] Unexpected font family displayed using custom SLD from a published WMS using geoserver

I think it's most likely due to the server not having the MS Windows fonts installed and available to the JVM. I think you can see a list of available fonts from the Server Status page of the GeoServer admin console. You should also be able to install additional fonts, see here: How do I use use custom fonts for labelling in Geoserver?.

Cheers,

Matt.

[GIS] Styling WMS layers in OL3

Styling WMS layers using SLD still means images styled on the server.

Open-source WMS implementations like GeoServer and MapServer support styling WMS layers with SLD. See the SLD-related MapServer and GeoServer docs for example.

So one option is to create the SLD on the client and send it in the WMS GetMap request through the SLD_BODY query string param. The WMS then uses the SLD for the rendering on the image.

Using OpenLayers 3 this will look like this:

var wmsLayer = new ol.layer.Tile({
  source: new ol.source.TileWMS({
    url: http://url-to-wms.com,
    params: {
      // ...
      'SLD_BODY': urlEncodedSLDString
    }
  })
});

Note that, as opposed to OpenLayers 2, OpenLayers 3 doesn't support sending WMS GetMap requests using POST. Using POST allows sending SLDs of practically any size, but the implementation in OpenLayers 2 is, in my opinion, not very robust—I won't use it in production.

But do you really need to create the style definition on the client? If you just need a fixed number of style definitions you can define style definitions on the server, once for good, and refer to them by their names in WMS GetMap requests, through the Style query string param. I'd recommend using this if you don't need to define styles dynamically on the client.

Best Answer

Related Solutions

[GIS] Unexpected font family displayed using custom SLD from a published WMS using geoserver

[GIS] Styling WMS layers in OL3

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