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Steve Hassenplug wrote:
> I think there are several readings that can give you more than one result. For
> example, if you take two readings of 90 and 270, what should the answer be? 0?
> 180?
>
> never mind. I like Derek's answer.
One of the things I did pickup from "my" answer is you need to have a
sample frequency small enough that you are not going to get wind
direction changes of 180 degrees or more. And I say or more, because
it's important to the average which direction you went to get from one
reading to the next reading.
Derek
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Message has 1 Reply:
 | | Re: OT: Math Help
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| (...) I noticed that, also. I think it says "changes must be less than 180". However, I'm not sure it matters which direction you went. For example, if you get readings of 10 deg and 20 deg, but in the time between the direction was never 15 (...) (19 years ago, 5-Aug-05, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: OT: Math Help
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| (...) Don't you get the same problem at 180, now? 170 + 190 = 170 +(-170) = 0 I think there are several readings that can give you more than one result. For example, if you take two readings of 90 and 270, what should the answer be? 0? 180? never (...) (19 years ago, 5-Aug-05, to lugnet.org.ca.rtltoronto)
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