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/* Done      by    Rajandran R */ 
/* Author of www.marketcalls.in  */ 
 
_SECTION_BEGIN("SuperTrend"); 
SetBarsRequired(100000,0); 
GraphXSpace = 15; 
SetChartOptions(0,chartShowArrows|chartShowDates); 
 
Plot( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | ParamStyle("Style") | GetPriceStyle() );  
 
 
_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) )); 
 
PositionSize = 100000; 
 
Factor=Optimize("Factor",2,2,10,1); 
Pd=Optimize("ATR Periods",11,1,20,1); 
Up=(H+L)/2+(Factor*ATR(Pd)); 
Dn=(H+L)/2-(Factor*ATR(Pd)); 
iATR=ATR(Pd); 
TrendUp=TrendDown=Null; 
trend[0]=1; 
changeOfTrend=0; 
flag=flagh=0; 
 
for (i = 1; i <BarCount; i++) { 
      TrendUp[i] = Null; 
      TrendDown[i] = Null; 
      
      trend[i]=1; 
    
       
      if (Close[i]>Up[i-1]) { 
         trend[i]=1; 
         if (trend[i-1] == -1) changeOfTrend = 1; 
          
      } 
      else if (Close[i]<Dn[i-1]) { 
         trend[i]=-1; 
         if (trend[i-1] == 1) changeOfTrend = 1; 
      } 
      else if (trend[i-1]==1) { 
         trend[i]=1; 
         changeOfTrend = 0;        
      } 
      else if (trend[i-1]==-1) { 
         trend[i]=-1; 
         changeOfTrend = 0; 
      } 
 
      if (trend[i]<0 && trend[i-1]>0) { 
         flag=1; 
      } 
      else { 
         flag=0; 
      } 
       
      if (trend[i]>0 && trend[i-1]<0) { 
         flagh=1; 
      } 
      else { 
         flagh=0; 
      } 
       
      if (trend[i]>0 && Dn[i]<Dn[i-1]){ 
         Dn[i]=Dn[i-1]; 
		} 
       
      if (trend[i]<0 && Up[i]>Up[i-1]) 
        { Up[i]=Up[i-1]; 
		} 
       
      if (flag==1) 
       {  Up[i]=(H[i]+L[i])/2+(Factor*iATR[i]);; 
        }  
      if (flagh==1) 
        { Dn[i]=(H[i]+L[i])/2-(Factor*iATR[i]);; 
         } 
      if (trend[i]==1) { 
         TrendUp[i]=Dn[i]; 
         if (changeOfTrend == 1) { 
            TrendUp[i-1] = TrendDown[i-1]; 
            changeOfTrend = 0; 
         } 
      } 
      else if (trend[i]==-1) { 
         TrendDown[i]=Up[i]; 
         if (changeOfTrend == 1) { 
            TrendDown[i-1] = TrendUp[i-1]; 
            changeOfTrend = 0; 
         } 
      } 
   }  
 
Plot(TrendUp,"Trend",colorGreen); 
Plot(TrendDown,"Down",colorRed); 
 
Buy = trend==1; 
Sell=trend==-1; 
 
Buy=ExRem(Buy,Sell); 
Sell=ExRem(Sell,Buy); 
Short=Sell; 
Cover=Buy; 
 
 
BuyPrice=ValueWhen(Buy,C); 
SellPrice=ValueWhen(Sell,C); 
ShortPrice=ValueWhen(Short,C); 
CoverPrice=ValueWhen(Cover,C); 
 
 
Title = EncodeColor(colorWhite)+ "Super Trend AFL code from www.marketcalls.in" + " - " +  Name() + " - " + EncodeColor(colorRed)+ Interval(2) + EncodeColor(colorWhite) + 
 "  - " + Date() +" - "+"\n" +EncodeColor(colorRed) +"Op-"+O+"  "+"Hi-"+H+"  "+"Lo-"+L+"  "+ 
"Cl-"+C+"  "+ "Vol= "+ WriteVal(V)+"\n"+  
EncodeColor(colorLime)+ 
WriteIf (Buy , " GO LONG / Reverse Signal at "+C+"  ","")+ 
WriteIf (Sell , " EXIT LONG / Reverse Signal at "+C+"  ","")+"\n"+EncodeColor(colorYellow)+ 
WriteIf(Sell , "Total Profit/Loss for the Last Trade Rs."+(C-BuyPrice)+"","")+ 
WriteIf(Buy  , "Total Profit/Loss for the Last trade Rs."+(SellPrice-C)+"",""); 
 
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(Short, shapeSquare, shapeNone),colorRed, 0, H, Offset=40); 
PlotShapes(IIf(Short, shapeSquare, shapeNone),colorOrange, 0,H, Offset=50);                       
PlotShapes(IIf(Short, shapeDownArrow, shapeNone),colorWhite, 0,H, Offset=-45); 
 
_SECTION_END();