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[amibroker] backtesting a watchlist problem



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Hi ,
      Looking for some help again please ,
re the code below and explorations/backtest reports,

r=8;

t=13;

Plot(Close, "Price", colorBlack, styleBar);

Plot(MA(Close,r),"r-MA",colorBlue,styleLine);

Plot(MA(Close,t),"t-MA",colorRed,styleLine);

 

MA1length=Optimize("ma1length",3,2,50,1);

MA2length=Optimize("MA2length",20,50,100,2);

fma=MA(C,r);//MA(C,MA1length);////

sma=MA(C,t);//MA(C,MA2length);////

PositionScore=RSI(15);

Filter=Cross(FMA,SMA) AND C>.1 ;

 

Buy=Ref(Filter,-1);

BuyPrice=Open;

Sell=Buy;

SellPrice=Close;

SetTradeDelays(0,0,0,0);

PositionSize=5000;

PlotShapes(shapeUpArrow*Buy,colorBrightGreen);//

PlotShapes(shapeDownArrow*Sell,colorRed);

 

AddColumn(V,"volume");

AddColumn(RSI(15),"rsi");

 

I'm finding that if i explore a particular date ie 6/10/2008 and then backtest on the 7/10/2008 i'm not always backtesting the same stock that was found the day before,i say not always as sometimes the backtest is correct but not 100% of the time.This worries me because when i optimize the system i may be getting a false report.

 Within AA i'm using the function "use filter" and selecting "define" ,,market=asx,,group=equity's.

Also ,sometimes the stock that is backtested is not even in the exploration results list from the day before,,,,,,,,,,puzzled again.

 

I've also tried scanning the entire asx for stocks with a close above 0.1 and created a new watchlist and then defined that watchlist via AA with similar problems,,,

 

 Wondering if anyone can see an error in the code (?) or do you think i've got  a watchlist population problem or maybe i need to include a "get watchlist" in the code,,i have tried looking through the help file on get watchlist but i'm getting a little lost there.

 

Any advise would be appreciated as i'm concerned any optimization or backtest may include some errors and i need to be confident i've got a true report of the system

regards

Paul

 

 

 

 

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