MACD_color

//+------------------------------------------------------------------+
//|                                                  Custom MACD.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+

//
//    Îòëè÷àåòñÿ îò ñòàíäàðòíîãî ÌÀÑD 
//    1. ðàñêðàñêîé â ñòèëå ÀÑ/ÀÎ
//    2. çàïðåòîì íà èçîáðàæåíèå íóëåâîãî áàðà
//
//    Difference from ÌÀÑD of standart
//    1. color of style of AC/AO
//    2. unvisible null bar
#property  copyright "Aleksandr Pak,Almaty, 2006"
#property  link  "ekr-ap@mail.ru" 
#property  link      "http://www.metaquotes.net/"
//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 3
#property  indicator_color1  Green
#property  indicator_color2  Red
#property  indicator_color3  Silver

#property  indicator_width1  2
#property  indicator_width2  2
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
//---- indicator buffers
double     MacdBuffer[],   MacdBufferUp[],   MacdBufferDown[];
double     SignalBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- drawing settings
  IndicatorBuffers(4);
   
   SetIndexBuffer (0,MacdBufferUp);
   SetIndexStyle  (0,DRAW_HISTOGRAM);
   SetIndexBuffer (1,MacdBufferDown); 
   SetIndexStyle  (1,DRAW_HISTOGRAM);
   SetIndexBuffer (2,SignalBuffer);
   SetIndexStyle  (2,DRAW_LINE);
   SetIndexDrawBegin(2,SignalSMA);
   SetIndexBuffer (3,MacdBuffer);
   SetIndexStyle  (3,DRAW_NONE);   
   
   SetIndexLabel  (0,"Buffer 0");
   SetIndexLabel  (1,"Buffer 1");
   SetIndexLabel  (2,"Signal");
   IndicatorDigits(Digits+3);
   IndicatorShortName("MACD_color("+FastEMA+","+SlowEMA+","+SignalSMA+")");
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Averages Convergence/Divergence                           |
//+------------------------------------------------------------------+
int start()
  {
   int limit,i;
   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 buffer
   for(i=0; i<limit; i++)
         {
         MacdBuffer[i]=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);
         }
   for(i=0; i<limit; i++)
   {
      MacdBufferDown[i]=0.0; MacdBufferUp[i]=0.0;
     
         if(i>=1) //ýòî çàðåò íà èçîáðàæåíèå íóëåâîãî áàðà //break the null bar  
            {
               if(MacdBuffer[i+1]-MacdBuffer[i]>=0)MacdBufferDown[i]=MacdBuffer[i]; //óñëîâèÿ ðàñêðàñè //condition of color
                  else MacdBufferUp[i]=MacdBuffer[i];}
            }
   for(i=0; i<limit; i++) SignalBuffer[i]=iMAOnArray(MacdBuffer,Bars,SignalSMA,0,MODE_SMA,i);
   return(0);
  }
//+------------------------------------------------------------------+