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SignalK / signalk-derived-data

Generates deltas for values derived from signalk values
Apache License 2.0
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VMG to course should be based on COG, not Heading? #33

Open tkurki opened 5 years ago

tkurki commented 5 years ago

https://github.com/SignalK/signalk-derived-data/blob/9318f3d93580115388ac45a69c560a63cff41ca8/calcs/vmg.js#L9

Why heading? That's not where you are moving and way more inaccurate than COG.

chris0348 commented 3 years ago

I had a look into vmg.js, I agree with Teppo that it is wrong to use headingTrue, instead, COG should be used.