AW: [OpenLayers-Users] Call a SLD file for a Vector Layer
gbrun
gbrun at myopera.com
Wed Jul 20 04:35:36 EDT 2011
Ok, it was only a SLD syntax problem... So with a right SLD, my code works!
Thanks for all!
Geoffrey
On Wed, 20 Jul 2011 09:00:42 +0200, gbrun <gbrun at myopera.com> wrote:
> Thanks for the update Andreas!
>
> So now, it works... almost! Now, there is a problem when I apply the
> selected style: when I add the layer without a style, it works, but when
> I try to apply a style to a layer with a SLD file, it doesn't work. What
> is quite strange is that, when I load a layer, I can see the layer while
> 1 second, until the style is effectively applied! Here is the code for
> my "add layer" button, which allows to load a selected layer from my
> tree. I apply the layer style at this moment because it avoids to load
> all the style when I build my tree. The style is loaded only when the
> layer is added.
>
> bbar: ['->',{
> text: "Add to the map",
> handler: function() {
> var node = layerCatalog.getSelectionModel().getSelectedNode();
> if(node) {
> var sld;
> var layername = node.attributes.layer.name;
> var url_sld = "sld/"+layername+".xml";
> var format_sld = new OpenLayers.Format.SLD();
>
> function setLayerStyles() {
> // set the default style for each layer from sld
> for (var l in sld.namedLayers) {
> var styles = sld.namedLayers[l].userStyles, style;
> for (var i=0,ii=styles.length; i<ii; ++i) {
> style = styles[i];
> node.attributes.layer.styleMap.styles["default"] = style;
> break;
> }
> }
> }
>
> function complete(req) {
> sld = format_sld.read(req.responseXML || req.responseText);
> setLayerStyles();
> }
>
> OpenLayers.loadURL(url_sld, null, null, complete);
> mapPanel.map.addLayer(node.attributes.layer);
> }
> }
> }]
>
> Any idea?
>
> Geoffrey
>
>
>
> On Tue, 19 Jul 2011 12:54:34 +0200, Andreas Hocevar
> <ahocevar at opengeo.org> wrote:
>
>> 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
>>>>
>>>>
>>>> --
>>>> Using Opera's revolutionary email client: http://www.opera.com/mail/
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>>>
>>>
>>>
>>> --
>>> Using Opera's revolutionary email client: http://www.opera.com/mail/
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>>
>>
>>
>>
>
>
--
Using Opera's revolutionary email client: http://www.opera.com/mail/
More information about the Users
mailing list