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Graphing wind direction

Posted: Wed Sep 30, 2009 3:07 am
by hasteiner
Hi,

I am using a line graph to plot wind speed and direction. Unfortunately, most of my wind comes from the North, plus or minus a few degrees.

This results in a very ugly graph as the values jump between 350 and 10 on almost every report.

Image

I am thinking that it would be good to be able to subtract 180 from the direction value being plotted and having a graph that goes between -180 and 180 degrees instead, which will result in a relatively flat direction line across the middle of the graph.

Does anyone know an easy way to manipulate the data in the graph to achieve this? I cannot calibrate it in the settings section of meteohub or everything is South instead of North.

Has anyone done something different with their direction graphs?

Thanks.

Re:Graphing wind direction

Posted: Wed Sep 30, 2009 4:31 pm
by skyewright
hasteiner wrote:Has anyone done something different with their direction graphs?
I plot direction using "Points" as the "Display Type".

I find that approach works fine for me. Maybe you'll like it too?

Re:Graphing wind direction

Posted: Wed Sep 30, 2009 10:07 pm
by Vetinari
skyewright wrote: I plot direction using "Points" as the "Display Type".
I did it the same way, except that I changed the °-sign to the text-mode. So you have a direct link with the points to the wind-direction.

Re:Graphing wind direction

Posted: Thu Oct 01, 2009 5:45 am
by hasteiner
Sometimes the answer is so obvious, and still I need to be told :unsure: .

The points look much better, thank you very much.