Projection oscillator strategy added.

README.md

@@ -46,6 +46,7 @@ The following list of strategies are currently supported by this package:
 - [Awesome Oscillator Strategy](#awesome-oscillator-strategy)
 - [Williams R Strategy](#williams-r-strategy)
 - [Chande Forecast Oscillator Strategy](#chande-forecast-oscillator-strategy)
+- [Projection Oscillator Strategy](#projection-oscillator-strategy)
 
 ## Usage
 
@@ -511,6 +512,14 @@ The [ChandeForecastOscillatorStrategy](https://pkg.go.dev/github.com/cinar/indic
 actions := indicator.ChandeForecastOscillatorStrategy(asset)
 ```
 
+#### Projection Oscillator Strategy
+
+The [ProjectionOscillatorStrategy](https://pkg.go.dev/github.com/cinar/indicator#ProjectionOscillatorStrategy) uses *po* and *spo* values that are generated by the [ProjectionOscillator](https://pkg.go.dev/github.com/cinar/indicator#ProjectionOscillator) indicator function to provide a BUY action when *po* is above *spo*, and SELL action when *po* is below *spo*.
+
+```golang
+actions := indicator.ProjectionOscillatorStrategy(period, smooth, asset)
+```
+
 ## Disclaimer
 
 The information provided on this project is strictly for informational purposes and is not to be construed as advice or solicitation to buy or sell any security.

strategy.go

@@ -258,3 +258,34 @@ func MakeMovingChandeForecastOscillatorStrategy(period int) StrategyFunction {
 		return MovingChandeForecastOscillatorStrategy(period, asset)
 	}
 }
+
+// Projection oscillator strategy function.
+func ProjectionOscillatorStrategy(period, smooth int, asset Asset) []Action {
+	actions := make([]Action, len(asset.Date))
+
+	po, spo := ProjectionOscillator(
+		period,
+		smooth,
+		asset.High,
+		asset.Low,
+		asset.Closing)
+
+	for i := 0; i < len(actions); i++ {
+		if po[i] > spo[i] {
+			actions[i] = BUY
+		} else if po[i] < spo[i] {
+			actions[i] = SELL
+		} else {
+			actions[i] = HOLD
+		}
+	}
+
+	return actions
+}
+
+// Make projection oscillator strategy.
+func MakeProjectionOscillatorStrategy(period, smooth int) StrategyFunction {
+	return func(asset Asset) []Action {
+		return ProjectionOscillatorStrategy(period, smooth, asset)
+	}
+}