//+------------------------------------------------------------------+
//|                                                    TDI_Histo.mq4 |
//|                                          Copyright © 2011, Shuba |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2011, Shuba"
#property  link      "http://www.metaquotes.net/"
//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 1
#property  indicator_color1  Silver
#property  indicator_width1  3
//---- indicator parameters
int SignalSMA=9;
//---- indicator buffers
double     MacdBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 2 additional buffers are used for counting.
   IndicatorBuffers(1);
//---- drawing settings
   SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexDrawBegin(0,SignalSMA);
   IndicatorDigits(Digits+2);
//---- 3 indicator buffers mapping
   SetIndexBuffer(0,MacdBuffer);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("OsTDI");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Average of Oscillator                                     |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
//---- macd counted in the 1-st additional buffer
   for(int i=0; i<limit; i++)
      MacdBuffer[i]=iCustom(NULL,0,"TDI Red Green", 4,i)-iCustom(NULL,0,"TDI Red Green", 5,i);
//---- done
   return(0);
  }
//+------------------------------------------------------------------+