Thanks for using the web app. I plan to put it on github soonish so other people can improve on it.

For those of us too old, too mean or too AA (anti-Apple) to buy an iPhone, It would be a great candidate for a Firefox Prism application on a netbook.

You certainly don’t need an iPhone for this to work, it will work on most webkit based devices such as android or blackberry 6. With a few updates it will work on Mobile Firefox 4 and possibly Opera Mobile 10.

Part of the problem is that, when you’re walking, the GPS is moving not only in relation to the Earth but also in relation to your body, so it is calculating the speed in response to both movements. Using the app on a iPhone attached to the handlebars while riding a bike whould test if this eliminates the error.

Probably the more important is the frequency of the speed calculation – marine gps units, for example, have a damping factor built in to allow for the pitching and rocking of a boat which result in erratic speed readouts. A speed sampling routine which averages the speed over a few seconds when the speed is below 30km, for example, might be worthwhile. Another approach would be to ignore speeds which are significantly different from the recent average speed.

This app rocks! For those of us too old, too mean or too AA (anti-Apple) to buy an iPhone, It would be a great candidate for a Firefox Prism application on a netbook.

How about adding in a little box underneath displaying elapsed mileage and a little reset button…

var options = {
  timeout: 10000,
  maximumAge: 20000,
  enableHighAccuracy: true
};
 
coordsListener = navigator.geolocation.watchPosition(TCNPS.updateStats, TCNPS.handleError, options);

and

navigator.geolocation.getCurrentPosition(TCNPS.getSpeed, TCNPS.handleError, options);

/Mogens

Thanks for the heads up. If you figure out the issue in the mean time let me know.

/Mogens

I’ll try your other GPS demo.

/Mogens

So it only works if you ride a car / bus / train, which makes it perfect for what I wanted!

I love you! come close, let me man-kiss you!

Now that I try it on my ipod touch, the needle does go to 180 and then to zero, and stays there.

That’s just a CSS3 animation that runs when you first rotate it to landscape. It’s not getting that from the GPS.

I ran all over the office like an idiot (I run like idiots do, kinda like a chicken) and the needle didn’t went up again.

Lol, for this to get a good reading you need to: have an iPhone 3G at least needs a GPS (iPod won’t work) and be outside with a clear view of the sky. I can get it to read speeds while I’m walking outside but it fluctuates between my actual speed and zero. To get consistant speed readings run it while you’re in a car or train.

Get your friend with his iPhone to try my other GPS demo and see if that works. Both of these demo also prompt for access to my location in Firefox 3.6

If I leave it alone for a while it tells me the following in a message box: http://labs.thecssninja.com Something has gone wrong in getting your location.

That alert message is attached to the geolocation error event so obviously something has gone wrong.

Get your friend with the iPhone to try my other GPS demo. All my GPS demo’s should work in Firefox 3.6 it’ll prompt you for access to your location.

If I leave it alone for a while it tells me the following in a message box:
http://labs.thecssninja.com Something has gone wrong in getting your location.

I suspect that is because I have an iPod Touch instead of an iPhone. But now, why my friend with the iPhone can’t see this with his Location services on?

And what is worst: it never ask him or me to share my location.

Just trying to test it! XD