package indicator type ATRPStream struct { Float64Series } func ATRP2(source KLineSubscription, window int) *ATRPStream { s := &ATRPStream{} tr := TR2(source) atr := RMA2(tr, window, true) atr.OnUpdate(func(x float64) { // x is the last rma k := source.Last(0) cloze := k.Close.Float64() atrp := x / cloze s.PushAndEmit(atrp) }) return s }