[Jflight-dev] Data synchronisation

[<rue...@we...>]

Hi Guido,

recently I had an idea about synching GPS- and variodata (-> using marks)
that might even be worth patenting it. I order to avoid problems with
manufacturers that might want to do that (who knows, and shit happens) I
would like to ask you to add the following paragraph to the spec - which
should be some kind of public announcement - and commit it to the repository
asap:

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Data synchronisation

Data synchronisation between the Vario-barogram and the GPS-track is an
essential feature of JFlight. It is done offline which causes some problems.
This can be avoided by the following means:

1) The reliable way: Setting "marks" in both data-sets (nearly) at the same
time. Mark setting is a device-dependent feature:
- For the Bräuniger it is done by pressing the "marker" key.
- For a Garmin-GPS the easiest way for later evaluation is pressing
two-times "mark / enter"  in a row which not only creates two new waypoints
but also two track-coordinates.

2) If marks are not available checking height, speed and coordinates for
significant changes and exeeding of certain threshholds can do the same, but
is less reliable.

The best approach would be a "best-of" of 1 and 2.

###


Thanks!

	Rüdiger