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[amibroker] Function Performance Pattern



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With the follow function I try to test performance pattern for 3/5 
and 8 periodes to obtain something like this for example:

#pattern : 52 (patterns found)  Per : 3 (back period)  5,1 (avg % 
gain)  52 ( % win trade)


function PP(Pattern) {// function Performance Pattern
P1=3;Step=5;i=0;

But I have the message "error 29 variable TitlePP0 used without 
having been initialized". I don't understand where is the problem

for( i = 0 ; i <= 2; i++ )  
{ 
back=P1+(i*Step);
NumPattern   	= LastValue(Cum(Pattern));
base[i]   		= Ref(C,-back);
NextBar[i]		= Ref(Pattern,-back);
Result[i] 		= IIf(NextBar[i],(C-base[i])/base[i]*100,0);
ResultTOT[i] 	= LastValue(Cum(Result[i]));
ResultMOY[i] 	= Nz(100*ResultTOT[i]/NumPattern);
UpTrade[i] 	= Result[i] >0;
DnTrade[i] 	= Result[i]<=0;
NumUpTrade[i]	= LastValue(Cum(UpTrade[i]));
NumDnTrade[i]	= LastValue(Cum(DnTrade[i]));
PatternWin[i]	= Nz(100*NumUpTrade[i]/(NumUpTrade[i]+NumDnTrade[i]));
TitlePP[i] = 
"Per :   "+NumToStr(Back,1.0)+
"Result MOY : "+NumToStr(ResultMOY[i],1.1);
"% Win :      "+NumToStr(PatternWin[i],1.1)+"  ";
} // FIN for( i = 0 ; i <= 2; i++ )  

Titre= "#Patterns : "+NumToStr(NumPattern,1.0)
+TitlePP0+TitlePP1+TitlePP2;
return titre ; } // fin fonction PP


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