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How to get True Wind Direction instead of apparent using Signal K.
#14
(2022-04-11, 07:21 PM)dreeas Wrote:
(2022-04-11, 07:15 PM)Techstyle Wrote: I just re-read your Opening Post and I don't think you need to do anything, and this is why:

Apparent wind direction/speed is the actual direction/speed the boat sees and records.  The reason it is different from the True wind is because the boat is moving.  Apparent means relative to the boat.  If the boat is stationary, Apparent and True are the same.  if you are making a Home weather station Apparent Wind = True Wind

maybe a better explanation: https://en.wikipedia.org/wiki/Apparent_wind

I have already studied that wiki page, and I agree. Problem is I just want the output to be what the sensor is sending in it´s nmea telegram, value in degrees 0-359 and not converted to radians. But I understand from the post above that SignalK does output it in radians and it´s not possible to change.

SignalK uses SI units - Radians for angle.  But Signal K is just a data handler.  You would want to use something like KIP (Singal K plugin) to view current data or Influx/Grafana to store and view trends - either of those can change the units
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RE: How to get True Wind Direction instead of apparent using Signal K. - by Techstyle - 2022-04-11, 07:32 PM

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