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Although I know the answer, I am still waiting for an AFL instruction like :
EnableScript( "Metastock" );
Regards, Ton.
----- Original Message -----
From: wavemechanic
To: amibroker@xxxxxxxxxxxxxxx
Sent: Sunday, June 24, 2007 10:39 PM
Subject: Re: [amibroker] Wolf Wave
I probably no longer "speak" Metastock very well but I don't think that the last line of Col A is correct and should generate an error. In addition, something must be missing because it does not appear that this code provides the bottom line Wolfe Wave result of price and time targets for the post-5th wave leg. These targets are generated by a Tradestation code (see below) written by Clyde Lee, Sytech, which was posted on another board and can be converted to AB. An idealized Wolfe Wave from the Wolfe Wave website is also given below. As shown, a trendline is formed with 1, 3, 5 (can be somewhat higher/lower). The time target is the apex of the triangle produced from trendlines 1,3 and 2,4. Trendline 1,4 defines the price target at the time target.
Wolfe Waves are easy to spot by eye so you might want to go that route. As is characteristic of pattern codes (e.g., Wolfe Waves, Fibonacci Patterns, etc.) pivots must be defined and they rarely follow the same defining conditions (e.g., % change). Eyeballing, however, can quickly pick them out and using, for example, the logic in the KB code at http://www.amibroker.com/kb/2006/05/06/discretionary-equity/ it is possible to click on pivots (not unlike the way some of the charting tools (e.g., pitchfork) work), specify their names (e.g., 1, 2, etc.), and then use them for plotting or AA output. Until this functionality is available to AB users, it should be possible to use the KB code approach to write a function that can be used pattern charting, including Wolfe Waves.
Enjoy.
Bill
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Tradestation code:
Inputs: NBars(13), {Number of bars for Swing_Lee pivot picking }
MaxBars(250); {Maximum number of bars forward to search for }
{Match/Crossing of ETA lines to set end EPA }
{If this is set to a very high number, the time}
{to compute and plot will become excessive. }
Vars: TPCount(0),Direct(0),
HoldPrice(0),BarsBk(0),
Slope1(0),Slope2(0),
ETA1(0),ETA2(0),EPA(0),
NewDate(0),NewTime(0);
Arrays: TPDate[4](0),TPTime[4](0),TPBar[4](0),TPPrice[4](0),TPDirect[4](0);
Direct=Swing_Lee_Simple(NBars,False);
If Sign(Direct)<>Sign(Direct[1]) then begin
BarsBk=AbsValue(Direct);
{Found a TurningPoing so increase count}
TPCount=TPCount+1;
{Save the proper price}
If Direct<0 then HoldPrice=High[BarsBk]
else HoldPrice=Low [BarsBk];
{Push the Stack}
For Value1=1 to 3 begin
TPDate[Value1] =TPDate[Value1+1];
TPTime[Value1] =TPTime[Value1+1];
TPBar[Value1] =TPBar[Value1+1];
TPPrice[Value1] =TPPrice[Value1+1];
TPDirect[Value1]=TPDirect[Value1+1];
End;
{Save Current Data}
TPDate[4] =Date[BarsBk];
TPTime[4] =Time[BarsBk];
TPBar[4] =CurrentBar-BarsBk;
TPPrice[4] =HoldPrice;
TPDirect[4]=Sign(Direct);
Plot1[BarsBk](HoldPrice,"TP");
If TPCount>3 then begin
{If we have 4 TP's then we can look for WW}
Condition1=False;Condition2=False;
Slope1=(TPPrice[3]-TPPrice[1])/(TPBar[1]-TPBar[3]);
Slope2=(TPPrice[4]-TPPrice[2])/(TPBar[2]-TPBar[4]);
If TPDirect[1]>0 then begin
{Look for Bullish WW}
Condition1=
TPPrice[4]>TPPrice[3] and
TPPrice[4]<TPPrice[2] and
TPPrice[3]<TPPrice[1] and
TPPrice[4]>TPPrice[1] and
Slope1 <Slope2 ;
End
Else Begin
{Look for Bearish WW}
Condition2=
TPPrice[4]<TPPrice[3] and
TPPrice[4]>TPPrice[2] and
TPPrice[3]>TPPrice[1] and
TPPrice[4]<TPPrice[1] and
Slope1 >Slope2 ;
End;
{Plot the wave and lines if it exists}
If Condition1 or Condition2 then begin
ETA1=TL_NEW(TPDate[1],TPTime[1],TPPrice[1],TPDate[3],TPTime[3],TPPrice[3]);
ETA2=TL_NEW(TPDate[2],TPTime[2],TPPrice[2],TPDate[4],TPTime[4],TPPrice[4]);
EPA =TL_NEW(TPDate[1],TPTime[1],TPPrice[1],TPDate[4],TPTime[4],TPPrice[4]);
Value5=TL_New(Date,Time,TL_GetValue(ETA1,Date,Time),
Date,Time,TL_GetValue(ETA2,Date,Time));
Value1=mod(tpcount,6)+2;
Value1=red;
TL_SetColor(ETA1,VALUE1);
TL_SetColor(ETA2,VALUE1);
TL_SetColor(EPA ,VALUE1);
TL_SetColor(Value5,Red);
TL_SetSize(Value5,3);
Value2=0;
Value1=0;
While Value2=0 and Value1< MaxBars begin
Value2=BarsToDate_Time(TPBar[4]-TPBar[3], Value1, NewDate, NewTime);
Value3=TL_GetValue(ETA2, NewDate, NewTime)-TL_GetValue(ETA1, NewDate, NewTime);
If Condition1 and Value3>0 then Value2=0;
If Condition2 and Value3<0 then Value2=0;
Value1=Value1+1;
End;
If Value2<>0 or Value1=MaxBars then begin
TL_SetEnd(ETA1, NewDate, NewTime, TL_GetValue(ETA1, NewDate, NewTime));
Value7=TL_GetValue(ETA2, NewDate, NewTime);
TL_SetEnd(ETA2, NewDate, NewTime, Value7);
Value8=Text_New(NewDate,NewTime,Value7,"ETA");
Text_SetStyle(Value8, 0, 2);
Value7=TL_GetValue(EPA , NewDate, NewTime);
TL_SetEnd(EPA , NewDate, NewTime, Value7);
Value8=Text_New(NewDate,NewTime,Value7,"EPA");
Text_SetStyle(Value8, 0, 2);
End;
End;
End;
End;
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