Hi Evan,

The best documentation certainly is the code ;-). But did you tried the
help text, ok yes, not that meaningful.

I'll try it:
Speed Task Average - Average cross country speed while on current task,
compensated for altitude.
-> That should give an estimate for the entire planned task based on
what xc has observed up to now, guessing you continue in the same
performance.

Speed Task Instantaneous - Instantaneous cross country speed while on
current task, compensated for altitude.
-> Your cc speed observed in a very small time period just passed.

Speed Task Achieved - Achieved cross country speed while on current
task, compensated for altitude.
-> Your cc speed on the time period from start to now.

-> Altitude compensation just means that the calculated cc speed stays
"constant" if you fly on a constant weather condition, e.g. also while
climbing; expecting you climb according to the MC setting. A much better
thermal than MC setting should then increase the calculated cc speed.

Up to now I do not see any plain distance over time devision as speed
calculation for the InfoBoxes.

Helmut

PS.: You are right, there might be a lot of assumptions in e.g. the
first figure and it would be great when at least the manual would
explain that. Currently only the help text is in the manual. 


Am Donnerstag, den 24.03.2011, 12:35 -0400 schrieb Evan Ludeman:
> Can someone please provide or point to definitions of:
> 
> Speed Task <achieved, average, instantaneous> as displayed in their
> respective info boxes and "compensated for altitude" ?
> 
> Is there a way to get average speed without "altitude compensation",
> that is simply distance flown on task divided by elapsed time?
> 
> Thanks...
> 
> Evan
> 
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Helmut Rohs
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growing manageability and security demands of your customers. Businesses
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be a part of the solution? Download the Intel(R) Manageability Checker 
today! http://p.sf.net/sfu/intel-dev2devmar
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