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

[Nicholas Efremov-Kendall]

Also, the Ipad, so far as I know, doesn't have an onboard GPS...

On Wed, Jul 13, 2011 at 8:42 AM, Nicholas Efremov-Kendall <
n.e.kendall at gmail.com> wrote:

> Wait...I'm confused...
>
> enablehighaccuracy with a timeout set to earlier will get the high accuracy
> coords and get you the speed you want because it will use a cached location
> and not fire up the gps on the device, but it will give you the accuracy you
> want. If you're not using it as set to true, you're doing geoloc based on
> cell towers or ip...
>
> as for what you use to get the coords, I'm using the same thing, aren't I?
> or am I missing something else here...
>
> thanks for the link, here's one I found useful.
> http://mobile.tutsplus.com/tutorials/mobile-web-apps/html5-geolocation/
>
>
> On Wed, Jul 13, 2011 at 8:35 AM, Noli Sicad <nsicad at gmail.com> wrote:
>
>> 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
>> >> _______________________________________________
>> >> Users mailing list
>> >> Users at lists.osgeo.org
>> >> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>> >>
>> >
>>
>
>
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