OpenLayers: how to style WFS layer with SLD file?

Question

I'm experimenting with a simple web mapping service build on PostGIS/GeoServer/OpenLayers stack on Win 2008 Server.

I overlay vector layer from PostGIS using:

var Index1v = new OpenLayers.Layer.Vector("Index1 v", {
    strategies: [new OpenLayers.Strategy.BBOX()],
        protocol: new OpenLayers.Protocol.WFS({
            version: "1.1.0",
            url: "http://localhost:1979/geoserver/wfs",
            featureType: "bern_poly_s100",
            featureNS: "http://www.ispm.ch",
            srsName: "EPSG:900913"
        })
});

Layer displays correctly, but in plain, default[?] style from GeoServer.

I've got a SLD style file build with uDig and it seems to be correct since WMS service is using it without any problems. Can I use it to style WFS layer as well?

score 11 · Accepted Answer · edited Feb 23 '17 at 12:45

11

Take a look at OL's "Styled Layer Descriptor (SLD) Example" example. They use SLD to style GML, but should work for WFS (a vector layer) as well.

Credit: OL's Nabble.com forum

edited Feb 23 '17 at 12:45

Auspex

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answered Dec 08 '10 at 19:43

Vadim

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1

That's cool - I didn't know you could do that. – Ian Turton Dec 08 '10 at 19:46
I've never used it but I thought I saw it somewhere before, so had to research the good old trusty Nabble.com forum. However lets keep filling out the SO GIS board as well. – Vadim Dec 08 '10 at 19:51
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But in a way you're right that you're still responsible for styling it on the client, right? It's not on the server. But you can style with a pre-made SLD on the client. – Vadim Dec 08 '10 at 19:52
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It appears that the link is broken. Could you explain how to do this, or provide a new link please? – Ravi Mehta Jan 24 '15 at 04:13

score 6 · Answer 2 · answered Dec 08 '10 at 17:52

Short answer is no - WFS sends you the data and then you are responsible for styling it in the client. OpenLayers uses a stylemap to style a vector layer. See http://docs.openlayers.org/library/feature_styling.html for details of how to style a vector layer.

score 2 · Answer 3 · answered Jul 26 '12 at 09:00

Yes, you could load the wfs-layer into openlayers, then parse the sld-file into an openlayers-stylemap, and apply it to the wfs-layer.

Alternatively, you could attach the sld to the geoserver-wfs-layer as the default sld. Then load the wfs-layer into openlayers and specify an image-format (e.g. image/png or image/jpeg) in the request parameter. Once loaded, store it as an Openlayers.Layer.WMS-object. This will render the layer as a raster layer with the attached sld already applied by geoserver.

score 1 · Answer 4 · answered Jan 13 '11 at 14:43

1

The OGC definition for sld say that is for WMS

The OpenGIS® Styled Layer Descriptor (SLD) Profile of the OpenGIS® Web Map Service (WMS) Encoding Standard

so !

answered Jan 13 '11 at 14:43

OpenLayers: how to style WFS layer with SLD file?

4 Answers4