Log format description and Mag data

Hi,

Is there a document describing the log file format ? The wiki is not extensive and not updated.

I was looking for Compass data, they seems to be now mag and mag2. My interest was to determine the mag field vector by using MagX, MagY and MagZ combined with vehicule heading.

I thought that using these values + offsets the magnitude of the vector should not depend on the flight direction. That is not the case in my records. Is that a mag calibration issue or I misunderstand something ?

Thanks,

Pascal

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