Log substitute using the GPS from Moitisier HAT 2

[niklun]

If I am not wrong you want to have Speed Through Water directly from Speed Over Ground (GPS) to send to your instruments and have "simulated" True Wind Angle, Speed and Direction. Is this ok?

I think the best way to do this is making a new calculation (STW = SOG) in this Signal K plugin: https://www.npmjs.com/package/signalk-derived-data

Hi Sailloog, could you explain and write the code to do the STW = SOG calculation? And what should I change in the plugin?

Thanks