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Working out GPS Co-ordinates

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  • 11-06-2007 12:53pm
    #1
    Eoin
    Registered Users Posts: 21,257 ✭✭✭✭


    Hopefully someone can shed some light on this:

    I have a blackberry with a bluetooth GPS receiver. When I read the GPS co-ordinates using an application like Spot, they are fine when I enter them into google maps. However when I get the co-ordinates directly from the device (before any calculations are done), they are miles off. Dublin city centre readings tend to put me somewhere near Bray.

    I get the following readings - longitude, latitude, number of satellites, horizontal dilution and fix quality from the device. Is there some calculation that must be carried out on these before the co-ordinates can be used?


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    #2
    Eoin
    Registered Users Posts: 21,257 ✭✭✭✭Eoin


    got it sorted - for anyone interested in writing a GPS Reader application:

    String from GPS: 00614.8958,5320.5128,x,x,x

    Change 00614.8958 to -6.148958
    Change 5320.5128 to 53.205128

    Divide everything after the decimal point by 60 and round it off so you get:

    53.34188,-6.248263


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