Function movingAverageLight

A moving average calculator (exponential weighted moving average) which does not keep track of previous samples. Less accurate, but uses less system resources.

The scaling parameter determines smoothing. A value of 1 means that the latest value is used as the average - that is, no smoothing. Higher numbers introduce progressively more smoothing by weighting the accumulated prior average more heavily.

const ma = movingAverageLight(); // default scaling of 3
ma(50);  // 50
ma(100); // 75
ma(75);  // 75
ma(0);   // 50
Copy

Note that the final average of 50 is pretty far from the last value of 0. To make it more responsive, we could use a lower scaling factor: movingAverageLight(2). This yields a final average of 37.5 instead.