CODEWITHSUNDEEP
iphoneandroidgpscoordinates
Stefan Steiger
Stefan Steiger

Reputation: 82296

GPS coordinates on mobile phones

Can GPS on a phone, such as iPhone or Android determine your Z coordinates ?

I know it certainly has to be able to determine X and Y, well longitude, latitude that is, but what about the Z coordinates ? Can it determine your height, and can I obtain height relative to ground ?

Upvotes: 2

Views: 2422

Answers (3)

SiggyF
SiggyF

Reputation: 23195

Height, as measured by a gps, is relative to the WGS84 ellipsoid. The WGS84 is representative of the field where the gravity is the same, the geoid. Not quite the same as the ground.

Upvotes: 3

Ta Sas
Ta Sas

Reputation: 9813

Android surely can ... have a look at the features of e.g. MyTracks which include even evaluation profiles.

Altitude, however, is usually measured in "above sealevel", which means, that you could determine the distance from the ground by substracting the ground evaluation from your actual evaluation: ev(ground) - alt = distance(fromGround).

Upvotes: 0

rano
rano

Reputation: 5666

You can determine altitude with iPhone using CoreLocation http://developer.apple.com/iphone/library/documentation/CoreLocation/Reference/CLLocation_Class/CLLocation/CLLocation.html

Upvotes: 0

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