[wxqc] Average wind direction?

[Mark Wyman]

Right, only this would essentially be an outline of the end points of the
rose.

-----Original Message-----
From: wxqc-bounces at lists.gladstonefamily.net
[mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Steve Dimse
Sent: Friday, August 11, 2006 11:45 AM
To: Discussion of weather data quality issues
Subject: Re: [wxqc] Average wind direction?


On Aug 11, 2006, at 11:41 AM, Mark Wyman wrote:

> If over a period of time the wind was only one angle, the ellipse  
> would be
> almost a straight line (flat) pointing in the direction of the  
> wind. One end
> would be pivot point. If the wind was random, it would be circular  
> and the
> pivot would be in the center.

This is not all that different from the wind rose on findU, though I  
use two different blues to indicate gust and sustained, and use two  
graphs to show different time periods, rather than to overlay with  
different colors.

To do it the way you indicate, it is necessary to fit a curve to the  
endpoints of my rose, which would be some work, and I'm not sure the  
result would be more understandable than the current one.

Steve K4HG
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