Once in a while, I get a message from someone in Spain or Italy that the altitude in my app is too high. Of course, I don't expect altitude from GPS to be terribly accurate. Then they'll say that some other app is getting better numbers.
So I tried an experiment. Three apps running at the exact same time, stationary phone, all getting altitude from the GPS. They all showed different numbers. Actual altitude: around 398 ft. My App: 392 ft. MyTracks: 350 at first. Between 350 and 370 Another GPS App: 425. Mine was closest, through sheer luck I think. I know I am using Altitude from the Location. Since I register for location updates >4m I don't get any altitude updates when standing still. MyTracks, I looked at the code, I know it is recording the altitude directly. It does do filtering for stats but not the altitude itself. Other apps that are not open source may be adjusting the altittude, but I don't know what it is. Then the customer wrote back to say he was comparing against two other GPS devices (ie other hardware) and the phone GPS was consistently 45 m higher than the rest. While that's not good, it does make more sense. Unfortunately, I can't forget the experiment I did in the meantime. Any tips? Nathan -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
