Add Stochastic Oscillator implementation and validation tests

- Implemented Stochastic Oscillator (%K and %D) in Stoch.cs with streaming and batch processing capabilities. - Added validation tests for the Stochastic Oscillator in Stoch.Validation.Tests.cs, ensuring consistency with Skender.Stock.Indicators. - Created documentation for the Stochastic Oscillator in Stoch.md, detailing its mathematical formula, architecture, parameters, and common pitfalls. - Updated project file to include necessary numeric libraries for highest and lowest calculations.
2026-08-21 03:58:04 +00:00 · 2026-02-12 14:29:54 -08:00
parent 653aafacd8
commit 92709ef2ed
73 changed files with 14721 additions and 35 deletions
@@ -0,0 +1,63 @@
+using System.Drawing;
+using System.Runtime.CompilerServices;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+[SkipLocalsInit]
+public sealed class CfoIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Period", sortIndex: 1, 1, 1000, 1, 0)]
+    public int Period { get; set; } = 14;
+
+    [IndicatorExtensions.DataSourceInput(sortIndex: 2)]
+    public SourceType Source { get; set; } = SourceType.Close;
+
+    [InputParameter("Show cold values", sortIndex: 21)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Cfo _cfo = null!;
+    private readonly LineSeries _series;
+
+    public static int MinHistoryDepths => 0;
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public override string ShortName => $"CFO ({Period})";
+    public override string SourceCodeLink => "https://github.com/mihakralj/QuanTAlib/blob/main/lib/oscillators/cfo/Cfo.Quantower.cs";
+
+    public CfoIndicator()
+    {
+        OnBackGround = true;
+        SeparateWindow = true;
+        Name = "CFO - Chande Forecast Oscillator";
+        Description = "Percentage difference between price and linear regression forecast";
+
+        _series = new LineSeries("CFO", Color.Yellow, 2, LineStyle.Solid);
+        AddLineSeries(_series);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnInit()
+    {
+        _cfo = new Cfo(Period);
+        base.OnInit();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        var priceSelector = Source.GetPriceSelector();
+        var item = HistoricalData[0, SeekOriginHistory.End];
+        double price = priceSelector(item);
+
+        TValue input = new(item.TimeLeft, price);
+        TValue result = _cfo.Update(input, args.IsNewBar());
+
+        if (!_cfo.IsHot && !ShowColdValues)
+        {
+            return;
+        }
+
+        _series.SetValue(result.Value);
+    }
+}