// WolfeWave-V1.01.afl
// Author: Mac Johnson
// Date: 28aug2005

Version(4.70); // works from this version onwards

SetChartBkColor(ParamColor("Background colour",colorBlack));

Plot(C, "", colorGrey40, styleCandle );

// Only interested in the visible bars
lastbar = Status("lastvisiblebarindex") - 10;
startBar = Status("firstvisiblebarindex");

// Some visual choices ...
BullPlot=ParamToggle("Plot bull signals", "No,Yes");
BullGuide=ParamToggle("Plot bull guides","No,Yes");
ExtendBull=ParamToggle("Extend bull plot", "No,Yes");
BullWColor=ParamColor("Bullish wave colour", colorBrightGreen);
BullTColor=ParamColor("Bullish trend colour", colorDarkGreen);

BearPlot=ParamToggle("Plot bear signals", "No,Yes");
BearGuide=ParamToggle("Plot bear guides", "No,Yes");
ExtendBear=ParamToggle("Extend bear plot", "No,Yes");
BearWColor=ParamColor("Bearish wave colour", colorRed);
BearTColor=ParamColor("Bearish trend colour", colorBrown);

// set AB's Peak/Trough percentage selection ratio
ValidDiff=1/Param("Peak ratio", 65, 0,500,5);

for(Bar = startbar; Bar < lastbar; Bar++)
{
// Build Peak and Trough arrays
P1 = Peak(H, validdiff, 1);
P1Idx = Bar - PeakBars(H, ValidDiff, 1);

P2 = Peak(H, validdiff, 2);
P2Idx = Bar - PeakBars(H, ValidDiff, 2);

T1 = Trough(L, validdiff, 1);
T1Idx = Bar - TroughBars(L, ValidDiff, 1);

T2 = Trough(Low, validdiff, 2);
T2Idx = Bar - TroughBars(L, ValidDiff, 2);

/* Test for a WolfeWave Bullish setup
*
* \ 2 + EPA
* \ Peak A is P2 / |
* \ /\ 4 / |
* \ / \ Peak C is P1 / |
* \ / \ /\ / |
* \ / \ / \ / |
* \/ \ / \ / |
* Trough X is T2 \ / \ / |
* 1 \ / \ / |
* \/ \ / |
* Trough B is T1 \/ |
* 3 5-D ETA
* Lines
* 1 - 4 = EPA
* 2 - 4 +
* 1 - 3 = ETA convergence
*/
if(BullPlot)
{
// are the peaks and troughs in the correct timewise order?
PTValid = (P1Idx[Bar] > T1Idx[Bar]) AND (T1Idx[Bar] > P2Idx[Bar]) AND (P2Idx[Bar] > T2Idx[Bar]);

// are the peaks and troughs hi's and lo's correct relatively?
HLValid = (P1[Bar] < P2[Bar]) AND (T1[Bar] < T2[Bar]) AND (P1[Bar] > T1[Bar]);

if(PTValid AND HLValid){
// Bareish Wolfewave found. Draw pattern.
PlotXA = LineArray(T2Idx[Bar], T2[Bar], P2Idx[Bar], P2[Bar]);
Plot(PlotXA, "", BullWColor, styleLine|styleThick);

PlotAB = LineArray(P2Idx[Bar], P2[Bar], T1Idx[Bar], T1[Bar]);
Plot(PlotAB, "", BullWColor, styleLine|styleThick );

PlotBC = LineArray(T1Idx[Bar], T1[Bar], P1Idx[Bar], P1[Bar]);
Plot(PlotBC, "", BullWColor, styleLine|styleThick);

if(BullGuide){
PlotAC = LineArray(P2Idx[Bar], P2[Bar], P1Idx[Bar], P1[Bar],extendBull);
Plot(PlotAC, "", BullTColor, styleLine|styleThick);

PlotXB = LineArray(T2Idx[Bar], T2[Bar], T1Idx[Bar], T1[Bar],extendBull);
Plot(PlotXB, "", BullTColor, styleLine|styleThick);

PlotXC = LineArray(T2Idx[Bar], T2[Bar], P1Idx[Bar], P1[Bar],extendBull);
Plot(PlotXC, "", BullTColor, styleLine|styleThick);
}
}
} // fi if(BullPlot)


/* Test for a WolfeWave Bearish setup
*
* 3 5-D ETA
* Peak B is P1 /\ |
* /\ / \ |
* 1 / \ / \ |
* Peak X is P2 / \ / \ |
* /\ / \ / \ |
* / \ / \ / \ |
* / \ / \/ \ |
* / \ / Trough C is T1 \ |
* / \/ 4 \ |
* / Trough A is T2 \ |
* / 2 + EPA
*
*
* Lines
* 1 - 4 = EPA
* 2 - 4 +
* 1 - 3 = ETA convergence
*/
if(BearPlot)
{
// are the peaks and troughs in the correct timewise order?
PTValid = (T1Idx[Bar] > P1Idx[Bar]) AND (P1Idx[Bar] > T2Idx[Bar]) AND (T2Idx[Bar] > P2Idx[Bar]);

// are the peaks and troughs hi's and lo's correct relatively?
HLValid = (P1[Bar] > P2[Bar]) AND (T1[Bar] > T2[Bar]) AND (T1[Bar] < P1[Bar]);

if(PTValid AND HLValid){
// Bullish Wolfewave found. Draw patterns
PlotXA = LineArray(P2Idx[Bar], P2[Bar], T2Idx[Bar], T2[Bar]);
Plot(PlotXA, "", BearWColor, styleLine|styleThick);

PlotAB = LineArray(T2Idx[Bar], T2[Bar], P1Idx[Bar], P1[Bar]);
Plot(PlotAB, "", BearWColor, styleLine|styleThick );

PlotBC = LineArray(P1Idx[Bar], P1[Bar], T1Idx[Bar], T1[Bar]);
Plot(PlotBC, "", BearWColor, styleLine|styleThick);

if(BearGuide){
PlotAC = LineArray(T2Idx[Bar], T2[Bar], T1Idx[Bar], T1[Bar],extendBear);
Plot(PlotAC, "", BearTColor, styleLine|styleThick);

PlotXB = LineArray(P2Idx[Bar], P2[Bar], P1Idx[Bar], P1[Bar],extendBear);
Plot(PlotXB, "", BearTColor, styleLine|styleThick);

PlotXC = LineArray(P2Idx[Bar], P2[Bar], T1Idx[Bar], T1[Bar],extendBear);
Plot(PlotXC, "", BearTColor, styleLine|styleThick);
}
}
} // fi if(BearPlot)
} // fi for(Bar =
_N(Title="Wolfe Wave Patterns");