North Wind direction

[goldrush]

Is it possible to chage the wind direction degrees on the "direction rose" such that it reads the more normal 360 degrees for North and not zero?

[steve]

Do you mean the compass thing - the one in the middle on the main screen?

If you can provide some evidence that 360 is more normal, I'll be happy to change it.

Steve

[steve]

I've found a number of references to 360 being the international standard (but also just a few saying 360 is never seen).

I guess that as well as displaying it as 360, it should also go into the logs as 360, which might cause me a few problems

Steve

[goldrush]

Maybe I have opened a can of worms?
Certainly in the aviation world I am involved in 360 is always used, and I thought this was the case in the weather forecasting world.
Actually, I have also been playing with Weather Display and although the main screen on that does show 360 some of the tags used form the custom pages, do use zero instead.. more confusion

[steve]

and I thought this was the case in the weather forecasting world.

Yes, it seems you're absolutely right. Anyway, I've done the changes and I'll unleash them shortly to see what havoc I can cause

Steve

[TNETWeather]

In a 360 degree compass, the readings go from 0 (which counts) to 359. Many instruments show 360 but are mathematically incorrect since that would mean you had a 361 degree compass.

I dont think it really matters though

[steve]

Yes, I found a few pictures of compasses, and many of them did go from 0 to 359. But it seems that in meteorology, 360 is the standard for north.

Steve

[Paul C]

In my guide I have from the Met Office my understanding is that it reads from 1-360. There is no "zero" 1. would be the first measure eg NNE and ending up at 360 due north. ? Apologies if you have now covered this topic.
North - 360
NNE 020
NE 045
ENE 070
E 090
ESE 110
SE 135
SSE 160
S 180
SSW 210
SW 225
WSW 250
W 270
WNW 290
NW 315
NNW 340
N 360
I also have a list of heights for your anemometer and the wind correction percentages required.

[steve]

Thanks for confirming that, Paul. Cumulus now reports 1-360, except when there is zero wind, when it reports 0 for the average wind direction, which Dave Wheeler tells me is correct.

Steve