//+------------------------------------------------------------------+
//|                                                      Chaikin.mq4 |
//|                                           Copyright © 2005, GuRu |
//|                                                    vip6967@bk.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, GuRu"
#property link      "vip6967@bk.ru"

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
//---- input parameters
extern int       nPeriod=11;
extern int       screen=1;
//---- buffers
double ChaikinBuff1[];
double ChaikinBuff2[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  	{
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ChaikinBuff1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,ChaikinBuff2);
//----
   	return(0);
  	}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  	{
//---- TODO: add your code here
   	
//----
   	return(0);
  	}
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  	{
  		int BeginBars=0;
  		int shift=0;
  		int i=0;
  		double ich=0;
  		double ich1=0;
  		
   	int    counted_bars=IndicatorCounted();
//---- TODO: add your code here
   	BeginBars=Bars-nPeriod-1;
   	if (screen==2) { BeginBars=150; }
   	
   	shift=BeginBars;
   	while (shift>0)
   	{
   		ich1=((Close[shift+1]-Low[shift+1])-(High[shift+1]-Close[shift+1]))
   			/(High[shift+1]-Low[shift+1])*Volume[shift+1];
   		ich=((Close[shift]-Low[shift])-(High[shift]-Close[shift]))
   			/(High[shift]-Close[shift])*Volume[shift];
   		ich=ich+ich1;
   		
   		ChaikinBuff2[shift]=ich;
   		
   		ich1=0;
   		
   		i=shift+nPeriod;
   		while (i>0)
   		{
   			ich=ChaikinBuff2[i];
   			ich1=ich1+ich;
   			i--;
   		}
   		
   		ich1=ich1/nPeriod;
   		ChaikinBuff1[shift]=ich1;
   		shift--;
   	}
//----
   	return(0);
  	}
//+------------------------------------------------------------------+