Math help - rolling average Wind Direction

[Darrel Taylor]

Missed the Modulas.

360 // 360 = 0

and

370 // 360 = 10

Also, keep in mind it's using a 3 sample running average.
So starting at 350, and a sample of 20, the difference is 30 and it will move 1/3 of that, or 10.
So it ends up at 360(0) after 1 sample.
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[paul borgmeier]

Just curious a bit ... Bill, what are you using to measure this direction 0 - 360?
Thanks

[wjsmarine]

Thanks Darrel, I'll take another look later (time for my beauty sleep).

Paul, it's a 360 degree precision linearity potentiometer fed with a regulated voltage. I use the PIC A2D to derive a count and then process the count for degrees.

Cheers,
Bill

[Darrel Taylor]

Hi,

Just updating this thread with a possible solution to the whole "rolling average Wind Direction" problem...

http://www.picbasic.co.uk/forum/show...6205#post76205

Cheers,