//+------------------------------------------------------------------+
//| CoeffoLine_Hist.mq4 
//| Ramdass - Conversion only
//+------------------------------------------------------------------+

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Red



extern int ndot=30;
extern int CountBars=10000;
//---- buffers
double cfl[];


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- indicator line
   IndicatorBuffers(1);
   SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexBuffer(0,cfl);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| CoeffofLine_v1                                                              |
//+------------------------------------------------------------------+
int start()
  {
  

  
   if (CountBars>=Bars) CountBars=Bars;
   SetIndexDrawBegin(0,Bars-CountBars+ndot+1);
   int i,shift,cnt,ndot1,counted_bars=IndicatorCounted();
   double TYVar,ZYVar,TIndicatorVar,ZIndicatorVar,M,N,AY,AIndicator;
//----
   if(Bars<=ndot) return(0);

//----
   shift=CountBars-ndot-1;


   while(shift>=0)
     {
     
   TYVar=0;
	ZYVar=0;
	N=0;
	M=0;
	TIndicatorVar=0;
	ZIndicatorVar=0;
	ndot1=ndot;
	if (shift+1<ndot1) ndot1=shift+1;
	for (cnt=ndot; cnt>=1; cnt--) // n=5 -  по пяти точкам
	{ 
		N=N+cnt*cnt;  //равно 55
		M=M+cnt;      //равно 15
	}
	for (cnt=ndot1; cnt>=1; cnt--) // n=5 -  по пяти точкам
	{
		ZYVar=ZYVar+(High[shift-cnt+1]+Low[shift-cnt+1])/2*(ndot+1-cnt);
		TYVar=TYVar+(High[shift-cnt+1]+Low[shift-cnt+1])/2;
		ZIndicatorVar=ZIndicatorVar+iMA(NULL,0,5,3,MODE_SMMA,PRICE_MEDIAN,shift-cnt+1)*(ndot+1-cnt);
		TIndicatorVar=TIndicatorVar+iMA(NULL,0,5,3,MODE_SMMA,PRICE_MEDIAN,shift-cnt+1);
	}
	AY=(TYVar+(N-2*ZYVar)*ndot/M)/M;
	AIndicator=(TIndicatorVar+(N-2*ZIndicatorVar)*ndot/M)/M;
	if (Symbol()=="EURUSD" || Symbol()=="GBPUSD" || Symbol()=="USDCAD" || Symbol()=="USDCHF" 
	 || Symbol()=="EURGBP" || Symbol()=="EURCHF" || Symbol()=="AUDUSD"
	 || Symbol()=="GBPCHF")
	{cfl[shift]=(-1000)*MathLog(AY/AIndicator);}
	else {cfl[shift]=(1000)*MathLog(AY/AIndicator);}


      shift--;
     }
   return(0);
  }
//+------------------------------------------------------------------+