Displaying Bernoulli Entropy Pastie For Amibroker (AFL)

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_SECTION_BEGIN("Trading System Based on Bernoulli Entropy function");
 
 
src = ParamField("Source");
len = Param("Length",22,1,100,1);
range = Param("Range",0.67,0.01,1,0.01);
average = Param("Average",88,1,100,1);
vPR = Param("Percent Rank Limit",5,1,10,1);
 
 
 
 
cr = src/sum(src,len);                                                               //source, typ close, percent of close, measured over summation period
vr = log(volume)/sum(log(volume),len)   ;                                            //volume data, percent of volume, measured of summation period
vr2 = min(max(percentrank(vr,average)/100,0.001),0.999) ;                                //cutting out 100% and 0% readings, changing to +/-3sigma
cr2 = min(max(percentrank(cr,average)/100,0.001),0.999) ;
infoc = sum((cr2*log10(cr2)/log10(2)) - (1-cr2)*log10(1-cr2)/log10(2),len);    //p(close)*log2(p(close)) - (1-p(close))*log2(1-p(close))
infov = sum((vr2*log10(vr2)/log10(2)) - (1-vr2)*log10(1-vr2)/log10(2),len);
info2 = infoc - infov    ;
 
 
color = IIf(info2>range, colorGreen, IIf(info2<-range,colorRed,colorGrey40));
//Plot(info2,"Info",color,styleHistogram | styleThick);
//Plot(infoc,"Price",colorBlue);
//Plot(-infov,"Volume",colorOrange);
 
 
hvp = percentrank(info2,average);
 
Buy = info2>range;
 
sell = info2<-range;
 
 
Buy = ExRem(Buy,Sell);
Sell = ExRem(Sell,Buy);
 
/* Plot Buy and Sell Signal Arrows */
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorGreen, 0, L, Offset=-40);
PlotShapes(IIf(Buy, shapeSquare, shapeNone),colorLime, 0,L, Offset=-50);
PlotShapes(IIf(Buy, shapeUpArrow, shapeNone),colorWhite, 0,L, Offset=-45);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorRed, 0, H, Offset=40);
PlotShapes(IIf(Sell, shapeSquare, shapeNone),colorOrange, 0,H, Offset=50);
PlotShapes(IIf(Sell, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-45);
 
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", color, styleNoTitle | ParamStyle("Style") | GetPriceStyle() ); 
 
 
_SECTION_END();

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Bernoulli Entropy for Amibroker (AFL)