[OpenLayers-Users] Loading a local GPX file into an OpenLayers Vector layer

[Robert Sanson]

I am developing an application that would allow a user to use HTML5 File API to browse for and read a local GPX file. So far, so good, I am doing this. Now I want to add the file contents to a new Vector layer and add it to the map. The GPX data is in WGS84 (EPSG:4326), and my map is in New Zealand Transverse Mercator (EPSG:2193).

What OpenLayers protocol settings can I use to pass the file contents to the OpenLayers GPX reader?

This code works if I have one of the GPX files in my htdocs directory:

var wgs84 = new OpenLayers.Projection("EPSG:4326");
        map.addLayer(new OpenLayers.Layer.Vector("GPX Vectors", {
           styleMap: gpxStyles,
            eventListeners: {
                "featuresadded": function(event) {
                    // 'this' is layer
                    this.map.zoomToExtent(this.getDataExtent());
                }
            },
            projection: wgs84,
            strategies: [new OpenLayers.Strategy.Fixed()],
            protocol: new OpenLayers.Protocol.HTTP({
                url: "deer 5-10-12.gpx",
                format: new OpenLayers.Format.GPX()
            })
        }));

But I want to point the url to the file in memory of the client browser, or use some other approach.

Any help would be appreciated.

Many thanks,

Robert Sanson



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