tests and cleanup

quantower/Statistics/VarianceIndicator.cs

@@ -0,0 +1,29 @@
+using TradingPlatform.BusinessLayer;
+namespace QuanTAlib;
+
+public class VarianceIndicator : IndicatorBase
+{
+    [InputParameter("Period", sortIndex: 1, minimum: 2, maximum: 2000, increment: 1, decimalPlaces: 0)]
+    public int Period { get; set; } = 20;
+
+    [InputParameter("Population", sortIndex: 2)]
+    public bool IsPopulation { get; set; } = false;
+
+    private Variance? variance;
+    protected override AbstractBase QuanTAlib => variance!;
+    public override string ShortName => $"VAR {Period} : {SourceName}";
+    public VarianceIndicator() : base()
+    {
+        Name = "VAR - Variance";
+        Description = "Measures the spread of price data around its mean, indicating volatility and potential trend changes.";
+        SeparateWindow = true;
+    }
+
+    protected override void InitIndicator()
+    {
+        SeparateWindow = true;
+        variance = new(Period, IsPopulation);
+        MinHistoryDepths = variance.WarmupPeriod;
+        base.InitIndicator();
+    }
+}