Harmonic Pattern Detection
The core of advanced trading strategies often involves harmonic pattern detection. These patterns, derived from Fibonacci levels, reveal potential market reversals or continuations. Amibroker data feed integration significantly boosts the accuracy of harmonic pattern detection algorithms. Traders can swiftly identify these patterns, aiding in decision-making processes for optimal trade execution.
//* HARMONIC PATTERN DETECTION Automatic Detection of Harmonic Patterns - Gartley, Bat, Butterfly and Crab. Zig Zag is not used in this AFL. It is based on fractals Contact - joy.edakad@gmail.com */ _SECTION_BEGIN("Price"); SetChartOptions(0,chartShowArrows|chartShowDates); _N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) )); Plot( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | ParamStyle("Style") | GetPriceStyle() ); _SECTION_END(); _SECTION_BEGIN("Gartley"); GBmin = Param("Swing B Min.",0.55,0.3,1,0.01); GBmax = Param("Swing B Max.",0.72,0.4,1,0.01); GCmin = Param("Swing C Min.",0.38,0.3,1.27,0.01); GCmax = Param("Swing C Max.",1.0,0.4,1.27,0.01); GDmin = Param("Swing D Min.(XA)",0.55,0.3,1,0.01); GDmax = Param("Swing D Max.(XA)",1.0,0.4,1.0,0.01); _SECTION_END(); _SECTION_BEGIN("Bat"); BatBmin = Param("Swing B Min.",0.38,0.3,1,0.01); BatBmax = Param("Swing B Max.",0.55,0.4,1,0.01); BatCmin = Param("Swing C Min.",0.38,0.3,1.62,0.01); BatCmax = Param("Swing C Max.",1.27,0.4,1.62,0.01); BatDmin = Param("Swing D Min.(XA)",0.5,0.3,1,0.01); BatDmax = Param("Swing D Max.(XA)",1.0,0.4,1.0,0.01); _SECTION_END(); _SECTION_BEGIN("Butterfly"); BtBmin = Param("Swing B Min.",0.55,0.3,1,0.01); BtBmax = Param("Swing B Max.",0.9,0.4,1,0.01); BtCmin = Param("Swing C Min.",0.38,0.3,1.62,0.01); BtCmax = Param("Swing C Max.",1.27,0.4,1.62,0.01); BtDmin = Param("Swing D Min.(XA)",1,1,1.8,0.01); BtDmax = Param("Swing D Max.(XA)",1.38,1,1.8,0.01); _SECTION_END(); _SECTION_BEGIN("Crab"); CBmin = Param("Swing B Min.",0.38,0.3,1,0.01); CBmax = Param("Swing B Max.",0.65,0.4,1,0.01); CCmin = Param("Swing C Min.",0.38,0.3,1.62,0.01); CCmax = Param("Swing C Max.",1.270,0.4,1.62,0.01); CDmin = Param("Swing D Min.(XA)",1.25,1,1.8,0.01); CDmax = Param("Swing D Max.(XA)",1.8,1,2,0.01); _SECTION_END(); _SECTION_BEGIN("Patterns"); strength = Param("Strength",5,2,15,1); bu = ParamToggle("Bullish Pattern","Off|On",1); be = ParamToggle("Bearish Pattern","Off|On",1); bi = Cum(1)-1; function GetTop(bars) { Top = H == HHV(H,2*bars) AND Ref(HHV(H,bars),bars) < H; Top = Top AND LastValue(bi)-ValueWhen(Top,bi) > bars; return Top; } function GetValley(bars) { Valley = L == LLV(L,2*bars) AND Ref(LLV(L,bars),bars) > L; Valley = Valley AND LastValue(bi)-ValueWhen(Valley,bi) > bars; return Valley; } // Build fractals array P1 = GetTop(strength); V1 = GetValley(Strength); P1 = IIf(P1,IIf(ValueWhen(P1,bi,2) < ValueWhen(V1,bi),P1,IIf(ValueWhen(P1,H,2) > H,False,P1)),P1); //P1 = IIf(P1 AND ValueWhen(P1,bi,0) > bi,IIf(ValueWhen(P1,bi,0) < ValueWhen(V1,bi,0),IIf(ValueWhen(P1,H,0) >= H,False,P1),P1),P1); P1 = IIf(P1 AND ValueWhen(P1,bi,0) > bi AND NOT(ValueWhen(V1,bi,0) > 0 AND ValueWhen(V1,bi,0)bi ,IIf(ValueWhen(V1,bi,0) < ValueWhen(P1,bi,0),IIf(ValueWhen(V1,L,0) <= L, False,V1),V1),V1); V1 = IIf(V1 AND ValueWhen(V1,bi,0) > bi AND NOT(ValueWhen(P1,bi,0) > bi AND ValueWhen(P1,bi,0) =ValueWhen(V1,L,0),False,V1),V1); P1H1 = ValueWhen(P1,H); P1Bar1 = ValueWhen(P1,bi); P1H2 = ValueWhen(P1,H,2); P1Bar2 = ValueWhen(P1,bi,2); V1L1 = ValueWhen(V1,L); V1Bar1 = ValueWhen(V1,bi); V1L2 = ValueWhen(V1,L,2); V1Bar2 = ValueWhen(V1,bi,2); //Bullish Patterns PTvalid = (P1Bar1 > V1Bar1 AND V1Bar1 > P1Bar2 AND P1bar2 > V1Bar2) AND P1; // Peaks and troughs are in order // 4 swings of developing Gartley/Bat etc. BullGartley4 = PTvalid AND (P1H2-V1L1)/(P1H2-V1L2) > GBmin AND (P1H2-V1L1)/(P1H2-V1L2) < GBmax AND (P1H1-V1L1)/(P1H2-V1L1) > GCMin AND (P1H1-V1L1)/(P1H2-V1L1) < GCMax; BullBat4 = PTvalid AND (P1H2-V1L1)/(P1H2-V1L2) > BatBmin AND (P1H2-V1L1)/(P1H2-V1L2) < BatBmax AND (P1H1-V1L1)/(P1H2-V1L1) > BatCMin AND (P1H1-V1L1)/(P1H2-V1L1) < BatCMax; BullButterfly4 = PTvalid AND (P1H2-V1L1)/(P1H2-V1L2) > BtBmin AND (P1H2-V1L1)/(P1H2-V1L2) < BtBMax AND (P1H1-V1L1)/(P1H2-V1L1) > BtCmin AND (P1H1-V1L1)/(P1H2-V1L1) < BtCmax; BullCrab4 = PTvalid AND (P1H2-V1L1)/(P1H2-V1L2) >CBmin AND (P1H2-V1L1)/(P1H2-V1L2) < CBmax AND (P1H1-V1L1)/(P1H2-V1L1) > CCmin AND (P1H1-V1L1)/(P1H2-V1L1) < CCmax; // Bullish Gartley/Bat found. D retacement level is not evaluated BullGartley = IIf(LowestSince(BullGartley4,L) < ValueWhen(BullGartley4,P1H2)-(ValueWhen(BullGartley4,P1H2)-ValueWhen(BullGartley4,V1L2))*GDmin AND LowestSince(bullGartley4,L) > ValueWhen(BullGartley4,P1H2)-(ValueWhen(BullGartley4,P1H2)-ValueWhen(BullGartley4,V1L2))*GDmax AND HighestSince(BullGartley4,H) <= ValueWhen(BullGartley4,P1H1 ) AND LowestSince(bullGartley4,L)==L, True,False); BullGartley = BullGartley AND LowestSince(BullGartley4,L) < ValueWhen(BullGartley4,V1L1); BullBat = IIf(LowestSince(BullBat4,L) < ValueWhen(BullBat4,P1H2)-(ValueWhen(BullBat4,P1H2)-ValueWhen(BullBat4,V1L2))*BatDmin AND LowestSince(BullBat4,L) > ValueWhen(BullBat4,P1H2)-(ValueWhen(BullBat4,P1H2)-ValueWhen(BullBat4,V1L2))*BatDmax AND HighestSince(BullBat4,H) <= ValueWhen(BullBat4,P1H1 ) AND LowestSince(BullBat4,L)==L, True,False); BullBat = BullBat AND LowestSince(BullCrab4,L) < ValueWhen(BullCrab4,V1L1); BullCrab = IIf(LowestSince(BullCrab4,L) < ValueWhen(BullCrab4,P1H2)-(ValueWhen(BullCrab4,P1H2)-ValueWhen(BullCrab4,V1L2))*CDmin AND LowestSince(BullCrab4,L) > ValueWhen(BullCrab4,P1H2)-(ValueWhen(BullCrab4,P1H2)-ValueWhen(BullCrab4,V1L2))*CDmax AND HighestSince(BullCrab4,H) <= ValueWhen(BullCrab4,P1H1 ) AND LowestSince(bullGartley4,L)==L, True,False); BullCrab = BullCrab AND LowestSince(BullCrab4,L) < ValueWhen(BullCrab4,V1L2); BullButterfly = IIf(LowestSince(BullButterfly4,L) < ValueWhen(BullButterfly4,P1H2)-(ValueWhen(BullButterfly4,P1H2)-ValueWhen(BullButterfly4,V1L2))*BtDMin AND LowestSince(BullButterfly4,L) > ValueWhen(BullButterfly4,P1H2)-(ValueWhen(BullButterfly4,P1H2)-ValueWhen(BullButterfly4,V1L2))*BtDmax AND HighestSince(BullButterfly4,H) <= ValueWhen(BullButterfly4,P1H1 ) AND LowestSince(bullButterfly4,L)==L, True,False); BullButterfly = BullButterfly AND LowestSince(BullButterfly4,L) < ValueWhen(BullButterfly4,V1L2); // to remove redumbdent lines BullHar4 = BullGartley4 OR BullButterfly4 OR BullBat4 OR BullCrab4 ; BullHar = BullGartley OR BullButterfly OR BullBat OR BullCrab ; Point4 = IIf(BullHar,ValueWhen(BullHar4,bi),Null); BullHar = IIf(BullHar, IIf(Point4 == ValueWhen(BullHar,point4,0) AND ValueWhen(BullHar,bi,0) > bi ,False,BullHar),BullHar); X = ValueWhen(BullHar4,V1L2); Xbar = ValueWhen(BullHar4,V1Bar2); A = ValueWhen(BullHar4,P1H2); Abar = ValueWhen(BullHar4,P1bar2); B = ValueWhen(BullHar4,V1L1); Bbar = ValueWhen(BullHar4,V1bar1); C1 = ValueWhen(BullHar4,P1H1); C1bar = ValueWhen(BullHar4,P1bar1); D = ValueWhen(BullHar,L); Dbar = ValueWhen(BullHar,bi); ABdXA = (A-B)/(A-X); BCdAB = (C1-B)/(A-B); ADdXA = (A-D)/(A-X); BCdCD = (C1-D)/(C1-B); PlotPattern = Dbar > C1bar; if(LastValue(PlotPattern) AND bu) { Plot( LineArray(LastValue(Xbar),LastValue(X),LastValue(Abar),LastValue(A)),"",colorBlue,styleThick); Plot(LineArray(LastValue(Abar),LastValue(A),LastValue(Bbar),LastValue(B)),"",colorBlue,styleThick); Plot(LineArray(LastValue(Bbar),LastValue(B),LastValue(C1bar),LastValue(C1)),"",colorBlue,styleThick); Plot(LineArray(LastValue(C1bar),LastValue(C1),LastValue(Dbar),LastValue(D)),"",colorBlue,styleThick); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Bbar),LastValue(B)),"",colorBlue,styleDashed); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Abar),LastValue(A)),"",colorBlue,styleThick); Plot(LineArray(LastValue(Abar),LastValue(A),LastValue(C1bar),LastValue(C1)),"",colorBlue,styleDashed); Plot(LineArray(LastValue(Bbar),LastValue(B),LastValue(Dbar),LastValue(D)),"",colorBlue,styleDashed); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Dbar),LastValue(D)),"",colorBlue,styleDashed); PlotText(NumToStr(LastValue(ABdXA),1.2),(LastValue(Bbar)+LastValue(Xbar))/2,(LastValue(B)+LastValue(X))/2,colorBlue); PlotText(NumToStr(LastValue(BCdAB),1.2),(LastValue(C1bar)+LastValue(Abar))/2,(LastValue(C1)+LastValue(A))/2,colorBlue); PlotText(NumToStr(LastValue(ADdXA),1.2) ,(LastValue(Dbar)+LastValue(Xbar))/2,(LastValue(D)+LastValue(X))/2,colorBlue); PlotText(NumToStr(LastValue(BCdCD),1.2),(LastValue(Bbar)+LastValue(Dbar))/2,(LastValue(B)+LastValue(D))/2,colorBlue); } // Bearish Patterns PTvalid = (V1Bar1 > P1Bar1 AND P1Bar1 > V1Bar2 AND V1Bar2 > P1Bar2) AND V1; // Swing 4 BearGartley4 = PTvalid AND (P1H1-V1L2)/(P1H2-V1L2) > GBmin AND (P1H1-V1L2)/(P1H2-V1L2) < GBmax AND (P1H1-V1L1)/(P1H1-V1L2) > GCmin AND (P1H1-V1L1)/(P1H1-V1L2) < GCmax; BearBat4 = PTvalid AND (P1H1-V1L2)/(P1H2-V1L2) > BatBmin AND (P1H1-V1L2)/(P1H2-V1L2) < BatBmax AND (P1H1-V1L1)/(P1H1-V1L2) > BatCmin AND (P1H1-V1L1)/(P1H1-V1L2) < BatCmax; BearButterfly4 = PTvalid AND (P1H1-V1L2)/(P1H2-V1L2) > BtBmin AND (P1H1-V1L2)/(P1H2-V1L2) < BtBmax AND (P1H1-V1L1)/(P1H1-V1L2) > BtCmin AND (P1H1-V1L1)/(P1H1-V1L2) < BtCmax; BearCrab4 = PTvalid AND (P1H1-V1L2)/(P1H2-V1L2) > CBmin AND (P1H1-V1L2)/(P1H2-V1L2) < CBmax AND (P1H1-V1L1)/(P1H1-V1L2) > CCmin AND (P1H1-V1L1)/(P1H1-V1L2) < CCmax; // Poin D BearGartley = IIf(HighestSince(bearGartley4,H) > ValueWhen(BearGartley4,V1L2) + (ValueWhen(BearGartley4,P1H2) - ValueWhen(BearGartley4,V1L2))*GDmin AND HighestSince(bearGartley4,H) < ValueWhen(BearGartley4,V1L2) + (ValueWhen(BearGartley4,P1H2) - ValueWhen(BearGartley4,V1L2))*GDMax AND LowestSince(BearGartley4,L) >= ValueWhen(BearGartley4,V1L1 ) AND HighestSince(BearGartley4,H) == H, True, False); BearGartley = BearGartley AND HighestSince(BearGartley4,H) > ValueWhen(BearGartley4,P1H1); BearBat = IIf((HighestSince(BearBat4,H) > ValueWhen(BearBat4,V1L2) + (ValueWhen(BearBat4,P1H2) - ValueWhen(BearBat4,V1L2))*BatDmin AND HighestSince(BearBat4,H) < ValueWhen(BearBat4,V1L2) + (ValueWhen(BearBat4,P1H2) - ValueWhen(BearBat4,V1L2))*BatDMax AND LowestSince(BearBat4,L) >= ValueWhen(BearBat4,V1L1 ) AND HighestSince(BearBat4,H) == H), True, False); BearBat = BearBat AND HighestSince(BearBat4,H) > ValueWhen(BearBat4,P1H1); BearButterfly = IIf(HighestSince(BearButterfly4,H) > ValueWhen(BearButterfly4,V1L2) + (ValueWhen(BearButterfly4,P1H2) - ValueWhen(BearButterfly4,V1L2))*BtDmin AND HighestSince(BearButterfly4,H) < ValueWhen(BearButterfly4,V1L2) + (ValueWhen(BearButterfly4,P1H2) - ValueWhen(BearButterfly4,V1L2))*BtDMax AND LowestSince(BearButterfly4,L) >= ValueWhen(BearButterfly4,V1L1 ) AND HighestSince(BearButterfly4,H) == H, True, False); BearButterfly = BearButterfly AND HighestSince(BearButterfly4,H) > ValueWhen(BearButterfly4,P1H2); BearCrab = IIf(HighestSince(BearCrab4,H) > ValueWhen(BearCrab4,V1L2) + (ValueWhen(BearCrab4,P1H2) - ValueWhen(BearCrab4,V1L2))*CDmin AND HighestSince(BearCrab4,H) < ValueWhen(BearCrab4,V1L2) + (ValueWhen(BearCrab4,P1H2) - ValueWhen(BearCrab4,V1L2))*CDMax AND LowestSince(BearCrab4,L) >= ValueWhen(BearCrab4,V1L1 ) AND HighestSince(BearCrab4,H) == H, True, False); BearCrab =BearCrab AND HighestSince(BearCrab4,H) > ValueWhen(BearCrab4,P1H2); BearHar4 = BearGartley4 OR BearButterfly4 OR BearBat4 OR BearCrab4 ; BearHar = BearGartley OR BearButterfly OR BearBat OR BearCrab ; Point4 = IIf(BearHar,ValueWhen(BearHar4,bi),Null); BearHar = IIf(BearHar, IIf(Point4 == ValueWhen(BearHar,point4,0) AND ValueWhen(BearHar,bi,0) > bi ,False,BearHar),BearHar); X = ValueWhen(BearHar4,P1H2); Xbar = ValueWhen(BearHar4,P1Bar2); A = ValueWhen(BearHar4,V1L2); Abar = ValueWhen( BearHar4,V1bar2); B = ValueWhen(BearHar4,P1H1); Bbar = ValueWhen(BearHar4,P1bar1); C1 = ValueWhen(BearHar4,V1L1); C1bar = ValueWhen(BearHar4,V1bar1); D = ValueWhen(BearHar,H); Dbar = ValueWhen(BearHar,bi); ABdXA = (B-A)/(X-A); BCdAB = (B-C1)/(B-A); ADdXA = (D-A)/(X-A); BCdCD = (D-C1)/(B-C1); PlotPattern = Dbar > C1bar; if(LastValue(Plotpattern) AND be) { Plot( LineArray(LastValue(Xbar),LastValue(X),LastValue(Abar),LastValue(A)),"",colorRed,styleThick); Plot(LineArray(LastValue(Abar),LastValue(A),LastValue(Bbar),LastValue(B)),"",colorRed,styleThick); Plot(LineArray(LastValue(Bbar),LastValue(B),LastValue(C1bar),LastValue(C1)),"",colorRed,styleThick); Plot(LineArray(LastValue(C1bar),LastValue(C1),LastValue(Dbar),LastValue(D)),"",colorRed,styleThick); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Bbar),LastValue(B)),"",colorRed,styleDashed); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Abar),LastValue(A)),"",colorRed,styleThick); Plot(LineArray(LastValue(Abar),LastValue(A),LastValue(C1bar),LastValue(C1)),"",colorRed,styleDashed); Plot(LineArray(LastValue(Bbar),LastValue(B),LastValue(Dbar),LastValue(D)),"",colorRed,styleDashed); Plot(LineArray(LastValue(Xbar),LastValue(X),LastValue(Dbar),LastValue(D)),"",colorRed,styleDashed); PlotText(NumToStr(LastValue(ABdXA),1.2),(LastValue(Bbar)+LastValue(Xbar))/2,(LastValue(B)+LastValue(X))/2,colorRed); PlotText(NumToStr(LastValue(BCdAB),1.2),(LastValue(C1bar)+LastValue(Abar))/2,(LastValue(C1)+LastValue(A))/2,colorRed); PlotText(NumToStr(LastValue(BCdCD),1.2) ,(LastValue(Dbar)+LastValue(Bbar))/2,(LastValue(D)+LastValue(B))/2,colorRed); PlotText(NumToStr(LastValue(ADdXA),1.2) ,(LastValue(Dbar)+LastValue(Xbar))/2,(LastValue(D)+LastValue(X))/2,colorRed); } LatPattern = bullHar OR bearHar; Lastpattern = LastValue(ValueWhen(LatPattern,IIf(BullGartley,1,IIf(BearGartley,-1,IIf(BullBat,2,IIf(BearBat,-2, IIf(BullButterfly,3,IIf(BearButterfly,-3,IIf(BullCrab,4,IIf(BearCrab,-4,Null)))))))))); PatternName = WriteIf(LastPattern == 1,"Bullish Gartley",WriteIf(LastPattern == -1,"Bearish Gartley",WriteIf(LastPattern == 2,"Bullish Bat", WriteIf(LastPattern == -2,"Bearish Bat",WriteIf(LastPattern == 3,"Bullish Butterfly",WriteIf(LastPattern == -3,"Bearish Butterfly", WriteIf(LastPattern == 4,"Bullish Crab",WriteIf(LastPattern == -4,"Bearish Crab","None")))))))); plotFractals = ParamToggle("Plot Fractals","Off|On",0); if(PlotFractals) { PlotShapes(shapeSmallCircle*P1,colorRed,0,H,10); PlotShapes(shapeSmallCircle*V1,colorBlue,O,L,-10); } GfxSetTextColor(IIf(LastPattern > 0, colorGreen,colorRed)); GfxTextOut("Last Pattern : " + PatternName,0,20); Filter = BullHar OR BearHar; Bull = BullHar; Bear = BearHar; Color = IIf(Bull,colorGreen,colorRed); AddColumn(IIf(Bull,1,IIf(Bear,-1,Null)),"Pattern",1.0,colorWhite,Color);