AW: [OpenLayers-Users] Call a SLD file for a Vector Layer
Andreas Hocevar
ahocevar at opengeo.org
Tue Jul 19 06:54:34 EDT 2011
Hi,
you may want to have a look at the updated sld example
(http://openlayers.org/dev/examples/sld.html). Especially at the
setLayerStyles function in http://openlayers.org/dev/examples/sld.js,
which shows you how to link the styles to an already existing StyleMap
of a layer.
Andreas.
On Tue, Jul 19, 2011 at 8:26 AM, gbrun <gbrun at myopera.com> wrote:
> Thanks for your reply!
>
> So I tried to so something with the LoadURL. The SLD file is well called (I
> can see it in firebug), but the problem is that I now don't know how to link
> it with its layer. I'm still a newbie in webmapping. I think, what I want to
> do is quite easy, but I'm still not used to! Here is my current code:
>
> createWFSLayer: function(data, featureType) {
>
> //Style definition
> var sld;
> var layername = featureType.name;
> var url_sld = "sld/"+layername+".xml";
>
> var format_sld = new OpenLayers.Format.SLD();
>
> OpenLayers.loadURL(url_sld, null, null, complete)
>
> function getDefaultStyle(sld, layerName) {
> var styles =
> sld.namedLayers[layerName].userStyles;
> var style;
> for(var i=0; i<styles.length; ++i) {
> style = styles[i];
> if(style.isDefault) {
> break;
> }
> }
> return style;
> };
>
> function complete(req) {
> sld = format_sld.read(req.responseXML ||
> req.responseText);
>
> var styleMap = new OpenLayers.StyleMap({
> "default":
> getDefaultStyle(sld, layername)
> });
> return styleMap;
> }
>
> var styleWFS = {styleMap: styleMap}
>
> //Layer options
> var layerOptions, protocolOptions;
> //Layer options definition
> protocolOptions = {
> url:
> data.capability.request.getfeature.href.post,
> featureType: featureType.name,
> featureNS: featureType.featureNS,
> outputFormat: "json",
> readFormat: new OpenLayers.Format.GeoJSON()
> };
> //Layer protocol definition
> layerOptions = {
> protocol: new
> OpenLayers.Protocol.WFS(protocolOptions),
> strategies: [new OpenLayers.Strategy.Fixed()]
> };
> return new OpenLayers.Layer.Vector(
> featureType.title,
> layerOptions,
> styleWFS
> );
> },
>
> My problem comes from the "complete" function. I can't get its result for
> the styleMap property of my layer!
>
> Geoffrey
>
>
> On Mon, 18 Jul 2011 18:17:07 +0200, Arnd Wippermann <arnd.wippermann at web.de>
> wrote:
>
>> Hi,
>>
>> As far as I know you can't load data with OpenLayers.Format.SLD(url). You
>> have to do it with an ajax call, i.e LoadUrl.
>>
>> Arnd
>>
>> -----Ursprüngliche Nachricht-----
>> Von: openlayers-users-bounces at lists.osgeo.org
>> [mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von gbrun
>> Gesendet: Montag, 18. Juli 2011 12:32
>> An: openlayers-users at lists.osgeo.org
>> Betreff: [OpenLayers-Users] Call a SLD file for a Vector Layer
>>
>> Hi list!
>>
>> I would like to apply SLD styles to my vector layers. It should work like
>> in
>> this example : http://www.openlayers.org/dev/examples/sld.html
>>
>> But what I want to do is a little bit different: each layer has its own
>> style. So I want that each vector layer calls its default style from a
>> folder in my web application where styles are stored with the same name as
>> their specific layer. For example, my application has a vector layer named
>> "vector". In this case, this layer must called a SLD file named
>> "vector.xml".
>>
>> The OpenLayers example uses a "OpenLayers.LoadURL()" method. I'm looking
>> for
>> a different way: I would like to read the SLD response without this
>> method.
>> It should look like this:
>>
>> var url_sld = "../sld/"+featureType.name+".xml";
>> var format_sld = new
>> OpenLayers.Format.SLD(url_sld);
>>
>> processResponse : function (response){
>> var sld =
>> format_sld.read(response.responseXML ||
>> response.responseText);
>> };
>>
>> But it doesn't work. I think, there is something that I don't understand
>> when I read the SLD response.
>>
>> Can someone clarify me this?
>>
>> Geoffrey
>>
>>
>> --
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>>
>
>
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Andreas Hocevar
OpenGeo - http://opengeo.org/
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