Which is not true.
You can get lat, long, altitude, accurancy via window.geolocation API
Then you to compare positions each needed interval to get a speed.

For heading, you can play with the accelerometer
http://www.albertosarullo.com/blog/javascript-accelerometer-demo-source

Have fun

R.

On Tue, May 17, 2011 at 08:43, Thoern <[email protected]> wrote:
> Ok it seems its not possible to reach it with html 5 or javascript,
> now only with iphoneGap and regular "app" envoirment.
> hopfully in future..
>
>
> On 12 Maj, 18:52, Mogens Beltoft <[email protected]> wrote:
>> The iPhone has an internal compass, apart from the 
>> AGPS.http://theiphonewiki.com/wiki/index.php?title=Compass
>>
>> The text you found describes how to obtain a pseudo-compass heading.
>>
>> /Mogens
>>
>> On 12-05-2011 12:43, Thoern wrote:
>>
>>
>>
>> > Aha
>> > I found a page that seems to explain the iphone compass
>>
>> > "Given that we know our position, in latitude and longitude, it's
>> > possible to calculate this Magnetic Declination. It can vary from 0 to
>> > 30 degrees here in North America. So, knowing the direction that a
>> > magnetic compass points to, there is a calculation that tells you the
>> > offset, East or West, and the angle to correct, to obtain True
>> > Geographic North.
>> > "
>> >http://www.ipodobserver.com/ipo/article/exploring_the_compass_app_in_...- 
>> >Dölj citerad text -
>>
>> - Visa citerad text -
>
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