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Old April 19th 11, 08:32 PM posted to rec.aviation.soaring
Wojciech Scigala
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Posts: 57
Default SeeYou task leg distance calculation question

Użytkownik Tuno napisał:

SeeYou (3.9x and now 4.00) is calculating the length of the final leg
in my TAT from the point of the last turn to the center of the finish
circle. Since I have "Reduce leg distance" checked in the options for
the Finish observation zone (and "Use flight fixes" in the task
options), I am expecting the distance from the last turn to the point
where the finish circle is entered, but I'm not getting that. I'd like
to know if I'm doing something wrong.

This is known SeeYou bug which was never fixed. It happens only with
area tasks ("Use flight fixes" option), racing tasks are calculated
correctly.

Two workarounds are available:
First, use "move origin" option on finish ring. This will reduce the
final leg length, but in a way which is different from IGC rules.

Second (in competitions), amend scoring script and deduct the ring
radius from each finisher's distace, then redo handicaps and speed
calculations.

There is also a third workaround, commonly utilised on many recent
competitons, including Worlds... it is "ignore it".

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