When loading many feature footprint vectors onto the map, the openlayers map and web application becomes unresponsive.  Is there any way to improve the performance of the openlayers map with many vectors?    We would like to be able to support at le...
My application ( html+ JavaScript) use Google map as a base layer. I also setup OSM as an offline base layer to use when there is no internet connection.  Now I'm locking for a way to make app check for internet connection, if there is, then use...
I'm currently successfully displaying multiple layers using OpenLayers (Vector and WMS). My application allow the user to modify some parameters, which will : * modify bound * modify map center * modify the WMS image I use Ajax to avoid page relo...
I'm rendering map with OSM and I have some serious problem with setting zIndex for page elements.  Part of JS looks like this:  var userRoute = new OpenLayers.Layer.Vector( "KML", {     sphericalMercator : true,     styleMap: styleMap,...
Im having hard time trying to understand the z-indexing of the vector features.  When i was searching the web for info i found these links: http://openlayers.org/dev/examples/ordering.html http://osgeo-org.1803224.n2.nabble.com/Bug-in-using-graphicZI...
Am trying to remove an array of features from OpenLayers 4 map.  I don't want to clear all features in the source. Added few selected features to an array.  Currently, am iterating array and using this. source.removeFeature(array[index]);  Instea...
I am having problems displaying a kml layer using OpenLayers.    Here is my kml file, Light.kml:  <?xml version="1.0" encoding="UTF-8"?> <kml xmlns="http://earth.google.com/kml/2.0"> <Folder> <open>1<...
This a continuation of a related problem that @rossta fixed part of, but now the problem is moved so thought I'd start over.  No errors and the script is completing (verified by console.log outputs in the script). The body element shows up. This...
I want to make "camera follow" effect on feature while its moves along path. The feature is moved using requestAnimationFrame, here is the example code:  var lastFrame = +new Date; var updateSlider = function () {     var now = +new Date, del...
Im trying to change the maxZoom option once a functionality of the map is activated. So it has to be during runtime so it can be rolled back to the original maxZoom.  Creating the ol.View you configure this parameters like this:  new ol.View({...

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