mirror of
https://github.com/mihakralj/QuanTAlib.git
synced 2026-08-09 22:40:57 +00:00
Miha Kralj
a9e72dae0d
- Updated Codacy instructions to streamline usage guidelines. - Refactored Bbands class to utilize ArrayPool for memory management, preventing stack overflow on large series. - Changed Fcb class to use long for monotonic deques to avoid truncation issues. - Enhanced Kchannel class to ensure safe defaults for non-finite values. - Improved Maenv class to prevent double-priming during calculations. - Modified Mmchannel class to ensure non-negative buffer indices and removed unnecessary state tracking. - Updated Pchannel class to correctly reference IsHot state. - Refined Regchannel class to avoid double-processing during calculations. - Enhanced Starchannel class to sanitize non-finite values during calculations. - Adjusted Stbands.Quantower.cs to allow finer control over multiplier precision. - Updated Ubands class to only update last valid values on new bars. - Modified Uchannel.Quantower.cs to allow for finer multiplier precision. - Enhanced Vwapbands classes to include standard deviation calculations and ensure consistent array lengths. - Refactored Vwapsd classes to include standard deviation outputs and ensure consistent array lengths. - Updated MonotonicDeque to use long for indices to prevent overflow. - Improved Mdape class to handle zero actual values with a substitute value for error calculation. - Enhanced Rae class to ensure correct state management during updates. - Refined Wmape class to simplify the logic for finding last valid actual and predicted values. - Updated Cmf.Quantower classes to ensure MinHistoryDepths reflects the current period.
92 lines
3.1 KiB
C#
92 lines
3.1 KiB
C#
using System.Drawing;
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using TradingPlatform.BusinessLayer;
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namespace QuanTAlib;
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public class VwapsdIndicator : Indicator, IWatchlistIndicator
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{
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[InputParameter("Number of Deviations", sortIndex: 1, minimum: 0.1, maximum: 5.0, increment: 0.1, decimalPlaces: 1)]
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public double NumDevs { get; set; } = 2.0;
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[InputParameter("Show cold values", sortIndex: 21)]
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public bool ShowColdValues { get; set; } = true;
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private Vwapsd? vwapsd;
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protected LineSeries? VwapSeries;
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protected LineSeries? UpperSeries;
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protected LineSeries? LowerSeries;
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protected LineSeries? WidthSeries;
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#pragma warning disable S2325 // Methods and properties that don't access instance data should be static
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public int MinHistoryDepths => 2;
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#pragma warning restore S2325
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int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
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public override string ShortName => $"VWAPSD ({NumDevs:F1})";
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public override string SourceCodeLink => "https://github.com/mihakralj/QuanTAlib/blob/main/lib/channels/vwapsd/Vwapsd.cs";
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public VwapsdIndicator()
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{
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Name = "VWAPSD - Volume Weighted Average Price with Configurable Standard Deviation Bands";
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Description = "Volume weighted average price with configurable standard deviation bands";
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VwapSeries = new("VWAP", Color.Blue, 2, LineStyle.Solid);
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UpperSeries = new("Upper", Color.Red, 1, LineStyle.Solid);
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LowerSeries = new("Lower", Color.Green, 1, LineStyle.Solid);
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WidthSeries = new("Width", Color.Gray, 1, LineStyle.Dot);
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AddLineSeries(VwapSeries);
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AddLineSeries(UpperSeries);
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AddLineSeries(LowerSeries);
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AddLineSeries(WidthSeries);
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SeparateWindow = false;
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OnBackGround = true;
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}
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protected override void OnInit()
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{
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vwapsd = new(NumDevs);
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if (UpperSeries != null)
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{
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UpperSeries.Name = $"Upper (+{NumDevs:F1}σ)";
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}
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if (LowerSeries != null)
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{
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LowerSeries.Name = $"Lower (-{NumDevs:F1}σ)";
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}
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base.OnInit();
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}
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private void UpdateSeriesNames()
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{
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if (UpperSeries != null)
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{
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UpperSeries.Name = $"Upper (+{NumDevs:F1}σ)";
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}
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if (LowerSeries != null)
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{
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LowerSeries.Name = $"Lower (-{NumDevs:F1}σ)";
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}
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}
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protected override void OnUpdate(UpdateArgs args)
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{
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var item = HistoricalData[0, SeekOriginHistory.End];
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// VWAP requires OHLCV data - using HLC3 for price
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double high = item[PriceType.High];
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double low = item[PriceType.Low];
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double close = item[PriceType.Close];
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double volume = item[PriceType.Volume];
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TBar bar = new(item.TimeLeft, item[PriceType.Open], high, low, close, volume);
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TValue result = vwapsd!.Update(bar, args.IsNewBar());
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VwapSeries!.SetValue(result.Value, vwapsd.IsHot, ShowColdValues);
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UpperSeries!.SetValue(vwapsd.Upper.Value, vwapsd.IsHot, ShowColdValues);
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LowerSeries!.SetValue(vwapsd.Lower.Value, vwapsd.IsHot, ShowColdValues);
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WidthSeries!.SetValue(vwapsd.Width.Value, vwapsd.IsHot, ShowColdValues);
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}
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}
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