//+------------------------------------------------------------------+
//|                                Bogie-Spread_Histogram-IND-v2.mq4 |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2009, Bogie Enterprises"
//---- indicator settings
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Red

double ExtMapBuffer[];
//----
int ExtCountedBars=0;
int x;


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorShortName("Current Spread = ");
   
   SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexDrawBegin(0,0);
//---- indicator buffers mapping
   SetIndexBuffer(0,ExtMapBuffer);
   
   int dig=MarketInfo(Symbol(),MODE_DIGITS);
    
    if(dig==2) x=1;
    if(dig==3) x=10;
    if(dig==4) x=1;
    if(dig==5) x=10;
   
  }


int start()
  {   
   ExtCountedBars=IndicatorCounted()+1;
   if (ExtCountedBars<0) return(-1);
   if (ExtCountedBars>0) ExtCountedBars--;
   
   int    i,pos=Bars-ExtCountedBars-1;
   
   while(pos>=0)
     {
      
      ExtMapBuffer[pos]=NormalizeDouble(MarketInfo(Symbol(),MODE_SPREAD)/x,1);
 	   pos--;
     }   
   
   return(0);
  }
//+------------------------------------------------------------------+