Plugin incorrectly sets True values based on NULL magnetic values

SignalK / signalk-derived-data

Generates deltas for values derived from signalk values

Apache License 2.0

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Closed tvr256 closed 7 months ago

tvr256 commented 9 months ago

If a magnetic value is NULL, then the calculated true value should also be NULL.

Currently the plugin incorrectly sets the true value, basing it on a magnetic value of 0: