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I'm working on a iPhone app that stores location data from a user. However, sometime the user doesn't have service.

Is there an API that estimates location data when the phone gets back into service? Or any other suggestions

AllieCat
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  • I have similar problem. Can you please check it. How point is away from polyline. I need it to always on polyline. Interpolate will help but i don't know how to apply it on for solving this problem. Ignore red circle. https://www.dropbox.com/s/d6sg3akexxe9xkh/GPS.png?dl=0 – anshul-systematix Jun 04 '15 at 11:00

1 Answers1

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No, there is no such API, because that would create wrong locations. You have to write yourself such a method, that hopefully works in the scope of your application demands:

E.g You could do a linear interpolation when the GPS service has an outage for some seconds.

e.g:

A liner interpolation of lat and lon values work without special geographic calculations.

Just it would not work if you cross the datum limit (border longitude = 180E to 180 W), and maybe not if you cross the poles.
But both situations will practically not happen.

AlexWien
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  • I have similar problem. Can you please check it. How point is away from polyline. I need it to always on polyline. Interpolate will help but i don't know how to apply it on for solving this problem. Ignore red circle. https://www.dropbox.com/s/d6sg3akexxe9xkh/GPS.png?dl=0 – anshul-systematix Jun 04 '15 at 10:57
  • @anshul-systematix You should post a new question for your problem. – AlexWien Jun 08 '15 at 19:07