feat: add new indicators (Decay, Edecay, MinusDi, MinusDm, PlusDi, PlusDm, Maxindex, Minindex, Sarext) and update pine scripts, core libs, validation tests, and python bindings

lib/oscillators/ac/ac.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Accelerator Oscillator (AC)", "AC", overlay=false)

lib/oscillators/ao/ao.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Awesome Oscillator (AO)", "AO", overlay=false)

lib/oscillators/apo/apo.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Absolute Price Oscillator (APO)", "APO", overlay=false)

lib/oscillators/bbb/bbb.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Bollinger %B", "BBB", overlay=false)

lib/oscillators/bbi/bbi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Bulls Bears Index (BBI)", "BBI", overlay=true)

lib/oscillators/bbs/bbs.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Bollinger Band Squeeze (BBS)", "BBS", overlay=true)

lib/oscillators/brar/brar.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Bull-Bear Power Ratio (BRAR)", "BRAR", overlay=false)

lib/oscillators/cfo/cfo.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Chande Forecast Oscillator", "CFO", overlay=false)

lib/oscillators/coppock/coppock.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Coppock Curve (COPPOCK)", "COPPOCK", overlay=false)

lib/oscillators/crsi/crsi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Connors RSI (CRSI)", "CRSI", overlay=false)

lib/oscillators/cti/cti.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Correlation Trend Indicator (CTI)", "CTI", overlay=false)

lib/oscillators/deco/deco.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Ehlers Decycler Oscillator (DECO)", "DECO", overlay=false)

lib/oscillators/dem/dem.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("DeMarker Oscillator (DEM)", "DEM", overlay=false)

lib/oscillators/dosc/dosc.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Derivative Oscillator (DOSC)", "DOSC", overlay=false, precision=4)

lib/oscillators/dpo/dpo.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Detrended Price Oscillator (DPO)", "DPO", overlay=false)

lib/oscillators/dymoi/dymoi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Dynamic Momentum Index (DYMOI)", "DYMOI", overlay=false)

lib/oscillators/er/er.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Efficiency Ratio (ER)", "ER", overlay=false)

lib/oscillators/eri/eri.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Elder Ray Index (ERI)", "ERI", overlay=false)

lib/oscillators/fi/fi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Force Index (FI)", "FI", overlay=false)

lib/oscillators/fisher/fisher.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Ehlers Fisher Transform (FISHER)", "FISHER", overlay=false)

lib/oscillators/gator/gator.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Williams Gator Oscillator", "GATOR", overlay=false)

lib/oscillators/imi/imi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Intraday Momentum Index (IMI)", "IMI", overlay=false)

lib/oscillators/inertia/inertia.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Inertia", "INERTIA", overlay=false)

lib/oscillators/kdj/kdj.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("KDJ", "KDJ", overlay=false)

lib/oscillators/kri/kri.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Kairi Relative Index (KRI)", "KRI", overlay=false, precision=4)

lib/oscillators/kst/kst.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("KST Oscillator (KST)", "KST", overlay=false, precision=4)

lib/oscillators/mstoch/mstoch.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 // Indicator algorithm (C) 2013 John F. Ehlers

lib/oscillators/pgo/pgo.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Pretty Good Oscillator", "PGO", overlay=false)

lib/oscillators/psl/psl.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Psychological Line (PSL)", "PSL", overlay=false)

lib/oscillators/qqe/Qqe.Validation.Tests.cs

@@ -241,4 +241,33 @@ public sealed class QqeValidationTests
         Assert.NotEqual(ind1.QqeValue, ind2.QqeValue);
         _output.WriteLine($"QQE(14,5,4.236)={ind1.QqeValue:F6}  QQE(7,3,2)={ind2.QqeValue:F6}");
     }
+
+    [Fact]
+    public void Qqe_Correction_Recomputes()
+    {
+        var ind = new Qqe();
+        var t0 = DateTime.MinValue;
+
+        // Build state well past warmup (WarmupPeriod ≈ 37)
+        for (int i = 0; i < 60; i++)
+        {
+            ind.Update(new TValue(t0.AddSeconds(i), 100.0 + i * 0.5));
+        }
+
+        // Anchor bar
+        var anchorTime = t0.AddSeconds(60);
+        const double anchorPrice = 130.0;
+        ind.Update(new TValue(anchorTime, anchorPrice), isNew: true);
+        double anchorQqe = ind.QqeValue;
+        double anchorSignal = ind.Signal;
+
+        // Use large downward spike (÷10) to move RSI away from ceiling
+        ind.Update(new TValue(anchorTime, anchorPrice / 10), isNew: false);
+        Assert.NotEqual(anchorQqe, ind.QqeValue);
+
+        // Correction back to original — both outputs must restore exactly
+        ind.Update(new TValue(anchorTime, anchorPrice), isNew: false);
+        Assert.Equal(anchorQqe, ind.QqeValue, 1e-9);
+        Assert.Equal(anchorSignal, ind.Signal, 1e-9);
+    }
 }

lib/oscillators/qqe/Qqe.cs

@@ -278,6 +278,10 @@ public sealed class Qqe : AbstractBase
     }
 
     /// <summary>Span-based batch calculation (QQE line only).</summary>
+    /// <remarks>
+    /// Computes only the QQE line (EMA-smoothed RSI). The dynamic trailing <see cref="Signal"/> line
+    /// is not available from this API; use <see cref="Update(TValue, bool)"/> streaming to access both outputs.
+    /// </remarks>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static void Batch(ReadOnlySpan<double> source, Span<double> output,
                              int rsiPeriod = DefaultRsiPeriod,

lib/oscillators/qqe/qqe.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Quantitative Qualitative Estimation (QQE)", "QQE", overlay=false)

lib/oscillators/reverseema/reverseema.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 // Indicator algorithm (C) 2017 John F. Ehlers
 //@version=6

lib/oscillators/rvgi/rvgi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Relative Vigor Index (RVGI)", "RVGI", overlay=false)

lib/oscillators/smi/smi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Stochastic Momentum Index (SMI)", "SMI", overlay=false)

lib/oscillators/squeeze/Squeeze.Validation.Tests.cs

@@ -215,4 +215,35 @@ public sealed class SqueezeValidationTests
         Assert.Equal(sqStream.Momentum, sqBatch.Momentum, precision: 8);
         Assert.Equal(sqStream.SqueezeOn, sqBatch.SqueezeOn);
     }
+
+    [Fact]
+    public void Squeeze_Correction_Recomputes()
+    {
+        var ind = new Squeeze(period: 20);
+        long t0 = TimeSpan.TicksPerSecond;
+
+        // Build state well past warmup (WarmupPeriod = 20)
+        for (int i = 0; i < 50; i++)
+        {
+            double p = 100.0 + i * 0.5;
+            ind.Update(new TBar(t0 + i * TimeSpan.TicksPerSecond, p, p + 1, p - 1, p, 1000), isNew: true);
+        }
+
+        // Anchor bar
+        long anchorTime = t0 + 50 * TimeSpan.TicksPerSecond;
+        var anchorBar = new TBar(anchorTime, 125.0, 126.0, 124.0, 125.0, 1000);
+        ind.Update(anchorBar, isNew: true);
+        double anchorMomentum = ind.Momentum;
+        bool anchorSqueezeOn = ind.SqueezeOn;
+
+        // Correction with dramatically different values — Momentum must change
+        var corruptBar = new TBar(anchorTime, 1250.0, 1260.0, 1240.0, 1250.0, 1000);
+        ind.Update(corruptBar, isNew: false);
+        Assert.NotEqual(anchorMomentum, ind.Momentum);
+
+        // Correction back to original — both outputs must restore exactly
+        ind.Update(anchorBar, isNew: false);
+        Assert.Equal(anchorMomentum, ind.Momentum, 1e-9);
+        Assert.Equal(anchorSqueezeOn, ind.SqueezeOn);
+    }
 }

lib/oscillators/squeeze/Squeeze.cs

@@ -369,6 +369,11 @@ public sealed class Squeeze : ITValuePublisher
         SqueezeOn = false;
     }
 
+    /// <summary>
+    /// Span-based batch Squeeze calculation. Populates both the momentum and squeeze-state output spans.
+    /// </summary>
+    /// <param name="momOut">Output span for Squeeze momentum values (linear regression of detrended price).</param>
+    /// <param name="sqOut">Output span for squeeze-state values (positive when Bollinger Bands are inside Keltner Channel).</param>
     public static void Batch(
         ReadOnlySpan<double> high,
         ReadOnlySpan<double> low,

lib/oscillators/squeeze/squeeze.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Squeeze Momentum (SQUEEZE)", "SQUEEZE", overlay=false)

lib/oscillators/stc/stc.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Schaff Trend Cycle (STC)", "STC", overlay=false)

lib/oscillators/stoch/stoch.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Stochastic Oscillator (STOCH)", "Stoch", overlay=false)

lib/oscillators/stochf/stochf.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Stochastic Fast (STOCHF)", "STOCHF", overlay=false)

lib/oscillators/stochrsi/Stochrsi.Validation.Tests.cs

@@ -405,4 +405,33 @@ public sealed class StochrsiValidationTests : IDisposable
         _output.WriteLine($"Skender span: {totalCompared} compared, {mismatches} mismatches ({mismatchRate:P2})");
         Assert.True(mismatchRate < 0.05, $"Skender span mismatch rate {mismatchRate:P2} exceeds 5% ({mismatches}/{totalCompared})");
     }
+
+    [Fact]
+    public void Stochrsi_Correction_Recomputes()
+    {
+        var ind = new Stochrsi();
+        var t0 = DateTime.MinValue;
+
+        // Build state well past warmup (WarmupPeriod ≈ 31)
+        for (int i = 0; i < 50; i++)
+        {
+            ind.Update(new TValue(t0.AddSeconds(i), 100.0 + i * 0.5));
+        }
+
+        // Anchor bar
+        var anchorTime = t0.AddSeconds(50);
+        const double anchorPrice = 125.0;
+        ind.Update(new TValue(anchorTime, anchorPrice), isNew: true);
+        double anchorK = ind.K;
+        double anchorD = ind.D;
+
+        // Use large downward spike (÷10) to move StochRSI away from ceiling
+        ind.Update(new TValue(anchorTime, anchorPrice / 10), isNew: false);
+        Assert.NotEqual(anchorK, ind.K);
+
+        // Correction back to original — both outputs must restore exactly
+        ind.Update(new TValue(anchorTime, anchorPrice), isNew: false);
+        Assert.Equal(anchorK, ind.K, 1e-9);
+        Assert.Equal(anchorD, ind.D, 1e-9);
+    }
 }

lib/oscillators/stochrsi/Stochrsi.cs

@@ -348,6 +348,10 @@ public sealed class Stochrsi : AbstractBase
     /// <summary>
     /// High-performance span-based StochRSI %K calculation.
     /// </summary>
+    /// <remarks>
+    /// Computes only the %K line (SMA-smoothed Stochastic RSI). The %D signal line (<see cref="D"/>)
+    /// is not available from this API; use <see cref="Update(TValue, bool)"/> streaming to access both outputs.
+    /// </remarks>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static void Batch(ReadOnlySpan<double> source, Span<double> output,
                              int rsiLength, int stochLength, int kSmooth, int dSmooth)

lib/oscillators/stochrsi/stochrsi.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Stochastic RSI (STOCHRSI)", "StochRSI", overlay=false)

lib/oscillators/td_seq/td_seq.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("TD Sequential (TD_SEQ)", "TD_SEQ", overlay=false)

lib/oscillators/trendflex/trendflex.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 // Indicator algorithm (C) 2013 John F. Ehlers

lib/oscillators/trix/trix.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("TRIX", "TRIX", overlay=false)

lib/oscillators/ultosc/ultosc.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Ultimate Oscillator (ULTOSC)", "ULTOSC", overlay=false)

lib/oscillators/willr/willr.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Williams %R (WILLR)", "WILLR", overlay=false)