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Automatically calculation of ground speed

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qgeopositioninf
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  • H Offline
    H Offline
    htietze
    wrote on last edited by
    #1

    I read position (long,lat,alt) and time value from a file and want to show the speed now. What I was expecting is that QGeoPositionInfo::GroundSpeed is being calculated automatically when I do setCoordinate() and setTimestamp(). But ground speed is nan. Is there any hidden function to do the calculation?

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