[OpenLayers-Users] GPS coordinate (GPS from mobile devices), lonlat and OpenLayers.Icon

[Noli Sicad]

Thanks for the tip.

However, I rather do the GPS, since this is native app (hybrid app -
Xcode and JS) and use

 position.coords.latitude
 position.coords.longitude

See the advantage here:

http://www.thecssninja.com/javascript/geolocation-iphone

Noli

On 7/13/11, Nicholas Efremov-Kendall <n.e.kendall at gmail.com> wrote:
> set : enablehighaccuracy to True, that actually access the GPS on the
> devices.
>
> On Wed, Jul 13, 2011 at 1:02 AM, Noli Sicad <nsicad at gmail.com> wrote:
>
>> Hi,
>>
>> I would like to replace the Geolocate control functionality to reading
>> from the GPS from mobile devices (e.g. iPhone and iPad 2). Geolocate
>> html5 is so off from the actual real coordinate (lonLat) like 500
>> metres away.
>>
>> How are do I am going to do this in easiest and nicer way?
>>
>> I am able to get the my current location (i.e. lon and lat values)
>> from the iPhone/ iPad  GPS  to HTML DOM (i.e. Textbox).
>>
>> e.g.
>>
>> jQTouch with Xcode,
>>
>> <ul class="edit rounded">
>>      <li>Longitude: <input id='lng' type="text" value='' /></li>
>>      <li>Latitude: <input id='lat' type="text" value='' /></li>
>> </ul>
>>
>> Now, the question is, would I be able to get icon from the local
>> directory, not from http server?
>>
>> In this example below, it seems that OpenLayers.Icon is retrieved from
>> http server.
>>
>> ~~~~~~
>> var icon = new OpenLayers.Icon('
>> http://www.openstreetmap.org/openlayers/img/marker.png',size,offset);
>> layerMarkers.addMarker(new OpenLayers.Marker(lonLat,icon));
>> ~~~~~~
>> from,  http://wiki.openstreetmap.org/wiki/Openlayers_Track_example
>>
>> If not, would vector maker good option for this?
>>
>> In this example, http://openlayers.org/dev/examples/geolocation.html
>>
>> How can I mapulated this function to cater to the lon and lat values
>> from the GPS?
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> var geolocate = new OpenLayers.Control.Geolocate({
>>    bind: false,
>>    geolocationOptions: {
>>        enableHighAccuracy: false,
>>        maximumAge: 0,
>>        timeout: 7000
>>    }
>> });
>> map.addControl(geolocate);
>> var firstGeolocation = true;
>> geolocate.events.register("locationupdated",geolocate,function(e) {
>>    vector.removeAllFeatures();
>>    var circle = new OpenLayers.Feature.Vector(
>>        OpenLayers.Geometry.Polygon.createRegularPolygon(
>>            new OpenLayers.Geometry.Point(e.point.x, e.point.y),
>>            e.position.coords.accuracy/2,
>>            40,
>>            0
>>        ),
>>        {},
>>        style
>>    );
>>    vector.addFeatures([
>>        new OpenLayers.Feature.Vector(
>>            e.point,
>>            {},
>>            {
>>                graphicName: 'cross',
>>                strokeColor: '#f00',
>>                strokeWidth: 2,
>>                fillOpacity: 0,
>>                pointRadius: 10
>>            }
>>        ),
>>        circle
>>    ]);
>>    if (firstGeolocation) {
>>        map.zoomToExtent(vector.getDataExtent());
>>        pulsate(circle);
>>        firstGeolocation = false;
>>        this.bind = true;
>>    }
>> });
>> geolocate.events.register("locationfailed",this,function() {
>>    OpenLayers.Console.log('Location detection failed');
>> });
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Any ideas and implementation how to do this?
>>
>> Thanks.
>>
>> Regards, Noli
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>>
>