Hi,
thanks for the support. Now it works. I can not exactly tell, what was going
wrong. But from my testing, I got the impression, that the TSV format is not
ver fail-save. Other formats are more robust (I'm using GML now).
All the best,
Heiner
Am 10.11.2010 um 22:25 schrieb Arnd Wippermann:
> Hi,
>
> That's an example to show winddirections.
>
> http://gis.ibbeck.de/OLClient/examples/windig.html
>
> Arnd
>
> -----Ursprüngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Heiner
> Lamprecht
> Gesendet: Mittwoch, 10. November 2010 20:53
> An: [email protected]
> Betreff: Re: [OpenLayers-Users] Using style depending on feature attributes
>
> Hi,
>
> I just noticed, that the StyleMap is completely ignored in the download
> scenario. Even the icon is not used. The layer uses the default icon
> instead.
>
>
> All the best,
>
>
> Heiner
>
> Am 10.11.2010 um 19:09 schrieb Heiner Lamprecht:
>
>> Hi,
>>
>> maybe I have mixed something up. Here is the JS-code of the page:
>>
>> --------------------------------------------------------
>> var map;
>> var wms;
>> var vectors;
>> var selectedId = -1;
>> var popup;
>>
>> function init(createDynamic) {
>> map = new OpenLayers.Map('map', {
>> controls: [
>> new OpenLayers.Control.LayerSwitcher(),
>> new OpenLayers.Control.Navigation(),
>> ]
>> });
>>
>> wms = new OpenLayers.Layer.WMS("OpenLayers WMS",
>> "http://vmap0.tiles.osgeo.org/wms/vmap0";, {layers: 'basic'}
>> );
>>
>> var testStyleMap = new OpenLayers.StyleMap({
>> "default": {
>> externalGraphic: "/MapTest/scripts/img/marker-green.png",
>> graphicHeight: 20,
>> graphicYOffset: -19,
>> rotation: "${rot}"
>> },
>> "select": {
>> cursor: "crosshair",
>> externalGraphic: "/MapTest/scripts/img/marker.png"
>> }
>> });
>>
>> if (createDynamic) {
>> /*
>> * Create set of features dynamically
>> */
>> var features = new Array(25);
>> for (var i=0; i<features.length; i++) {
>> features[i] = new OpenLayers.Feature.Vector(
>> new OpenLayers.Geometry.Point(
>> (340 * Math.random()) - 170,
>> (160 * Math.random()) - 80
>> ), {
>> rot: 100 * Math.random() | 0,
>> name: "no name",
>> description: "no desc"
>> }
>> );
>> }
>>
>> vectors = new OpenLayers.Layer.Vector("Points", {styleMap:
> testStyleMap});
>> vectors.addFeatures(features);
>> } else {
>> /*
>> * Download features from server
>> */
>> vectors = new OpenLayers.Layer.Vector("Points",
>> {
>> strategies: [new OpenLayers.Strategy.BBOX({resFactor:
> 1.1})],
>> styleMap: testStyleMap,
>> protocol: new OpenLayers.Protocol.HTTP({
>> url: "/MapTest/FeatureServlet",
>> format: new OpenLayers.Format.Text()
>> })
>> }
>> );
>> }
>>
>> map.addLayers([wms, vectors]);
>>
>> // Interaction; not needed for initial display.
>> selectControl = new OpenLayers.Control.SelectFeature(vectors);
>> map.addControl(selectControl);
>> map.setCenter(
>> new OpenLayers.LonLat(-71.147, 46.472).transform(
>> new OpenLayers.Projection("EPSG:4326"),
>> map.getProjectionObject()
>> ), 8
>> );
>> selectControl.activate();
>> vectors.events.on({
>> 'featureselected': onFeatureSelect,
>> 'featureunselected': onFeatureUnselect
>> });
>> };
>>
>> // Needed only for interaction, not for the display.
>> function onPopupClose(evt) {
>> try {
>> // 'this' is the popup.
>> selectControl.unselect(this.feature);
>> } catch (e) {}
>> }
>>
>> function onFeatureSelect(evt) {
>> try {
>> feature = evt.feature;
>> popup = new OpenLayers.Popup.FramedCloud("featurePopup",
>> feature.geometry.getBounds().getCenterLonLat(),
>> new OpenLayers.Size(100,100),
>> "<h2>" + feature.attributes.name + "</h2>" +
>> feature.attributes.description + "<br/>" +
>> "Rotation: <b>" + feature.attributes.rot + "</b>",
>> null, true, onPopupClose);
>> feature.popup = popup;
>> popup.feature = feature;
>> map.addPopup(popup);
>> selectedId = feature.attributes.id;
>> } catch (e) {}
>> }
>>
>> function onFeatureUnselect(evt) {
>> try {
>> feature = evt.feature;
>>
>> if (feature.popup) {
>> popup.feature = null;
>> map.removePopup(feature.popup);
>> feature.popup.destroy();
>> feature.popup = null;
>> }
>> } catch (e) {}
>> }
>> --------------------------------------------------------
>>
>> If I call init(true), I get rotated icons, if I call init(false), they are
> not rotated. In both cases, the label is displayed correctly.
>>
>> Do you know any online examples that try to rotate a image, while loading
> the features dynamically from a server?
>>
>>
>> All the best,
>>
>>
>> Heiner
>>
>> Am 10.11.2010 um 18:04 schrieb Arnd Wippermann:
>>
>>> Hi,
>>>
>>> It should work.
>>>
>>> The styleMap of the layer is used, when new features are added to the
> layer.
>>> If your attributes match the rules in your stylemap, then the
>>> features should displayed in that way without any further tasks.
>>>
>>> Arnd
>>>
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: [email protected]
>>> [mailto:[email protected]] Im Auftrag von
>>> Heiner Lamprecht
>>> Gesendet: Dienstag, 9. November 2010 22:04
>>> An: [email protected]
>>> Betreff: [OpenLayers-Users] Using style depending on feature
>>> attributes
>>>
>>> Dear,
>>>
>>> I'm quite new to OpenLayers, started with some small tests last weekend.
>>> So, please forgive me, if I ask some stupid questions ;-)
>>>
>>> At the moment, I want to change the style of a feature according to
>>> some attribute values. I looked into the examples (like
>>> style-rules.html and styles-rotation.html), and it looks quite good.
>>> My only problem is: How to use this with dynamically loaded data.
>>>
>>> If I create the features like in the examples (JS-Code in the page)
>>> and add them to the layer ("vector.addFeatures(features);"), it
>>> works. But I would like to load the features from a server, using
>>> the text format
>>> (tab-seperated):
>>>
>>> var vector = new OpenLayers.Layer.Vector("Points", {
>>> strategies: [new OpenLayers.Strategy.Fixed()],
>>> styleMap: new OpenLayers.StyleMap(style),
>>> protocol: new OpenLayers.Protocol.HTTP({
>>> url: "/MapTest/FeatureServlet",
>>> format: new OpenLayers.Format.Text()
>>> })
>>> });
>>>
>>> I can use the feature attributes f.e. in a layer, so in general, they
>>> are created correctly.
>>>
>>> Any hints what is going wrong? Any additional info needed?
>>>
>>>
>>> Best regards,
>>>
>>>
>>> Heiner
>>>
>>> _______________________________________________
>>> Users mailing list
>>> [email protected]
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>>
>>
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>
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