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How to use OpenLayers 3 feature onClick event?
Once you click, it takes the pixel clicked and iterate through all the layers to find any feature within a range of that pixel coordinate. It’s not going through all the pixels of the map. Look at the code to better understand this.
How does the event handler work in OpenLayers?
The callback gets passed 2 arguments: the feature and the layer the feature is in. Good to know is the .getEventPixel (event) function, if you don’t work with openlayers event handlers but with handlers on the viewport.
How to add feature to vector layer in OpenLayers 3?
I am using the following code to add a feature to a vector layer in OpenLayers 3 (OL3):
How to check if a feature got clicked?
For checking if a feature did get clicked, there is the .forEachFeatureAtPixel (pixel, callback) function of ol.Map. ( http://openlayers.org/en/master/apidoc/ol.Map.html#forEachFeatureAtPixel ) The callback is executed on every feature at the pixel. The callback gets passed 2 arguments: the feature and the layer the feature is in.
What can you do with a feature layer?
Using a feature layer, you can view, edit, analyze, and execute queries against features and their attributes. Each type of feature layer meets a different need and, therefore, has slightly different functionality. For a comparison of functionality available with each type of feature layer, see Feature layer functionality.
How to detect a click on a layer?
How do I detect a click on a layer and find out information about the layer that was clicked? Currently I can do the usual binding a popup and adding a click handler on the layer:
How are feature layers connected in map viewer classic?
When you add a streaming feature layer to Map Viewer Classic, you can use streaming controls to filter the data that the service sends to the layer. Streaming feature layers can be identified by their icon in the content page. Streaming feature layers connect to an ArcGIS Server stream service using HTML5 WebSockets.