//+------------------------------------------------------------------+
//|                                                      MACD 4H.mq4 |
//|                                         Copyright © 2006, lukas1 |
//|                                     MACD from   old   timeframe  |
//|                                    v.10  enable for visual mode  |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2006, lukas1"
//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 2
#property  indicator_color1  MediumPurple
#property  indicator_color2  Red
#property  indicator_width1  2
//---- indicator parameters
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
extern int AppliedPrice = 0;   // 0=PRICE_CLOSE; 1=PRICE_OPEN; 5=PRICE_TYPICAL
extern int VarPeriod=240;      //old timeframe
         //PERIOD_M5   5         5 minutes
         //PERIOD_M15  15        15 minutes 
         //PERIOD_M30  30        30 minutes 
         //PERIOD_H1   60        1 hour 
         //PERIOD_H4   240       4 hours 
         //PERIOD_D1   1440      1 day 
         //PERIOD_W1   10080     1 week 
         //PERIOD_MN1  43200     1 month 
//---- indicator buffers
double     MacdBuffer[],SignalBuffer[];
int p;  // current period
int k;  // repetition factor old timeframe
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- drawing settings
   SetIndexStyle(0, DRAW_HISTOGRAM);
   SetIndexStyle(1, DRAW_LINE);
   SetIndexStyle(2, 12);
   SetIndexStyle(3, 12);   
   SetIndexDrawBegin(0, SlowEMA);
   SetIndexDrawBegin(1, SlowEMA);   
   IndicatorDigits(Digits + 1);
//---- indicator buffers mapping
   SetIndexBuffer(0, MacdBuffer);
   SetIndexBuffer(1, SignalBuffer);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("MACD 4H (" + FastEMA + "," + SlowEMA + "," + SignalSMA + 
                      ", " + VarPeriod + "min)");
   SetIndexLabel(0, "MACD 4H(" + VarPeriod + ")");
   SetIndexLabel(1, "Signal 4H(" + VarPeriod + ")");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Averages Convergence/Divergence (MACD) for old timeframe  |
//+------------------------------------------------------------------+
int start()
  {
   int i, limit;
   int counted_bars = IndicatorCounted();
   //---- check for possible errors
   if(counted_bars < 0)       return(-1);
   if(counted_bars <= SlowEMA)
       limit = Bars - SlowEMA ;
   else
       limit = Bars - counted_bars;   
   p = Period();
   k = VarPeriod/p;                              // repetition factor old timeframe
   i=limit-1;
   while (i>=0)
      {
      int bb=HighBar(Symbol(), 0, i, VarPeriod); // definition of HighBar, having symbol, lowTF,
                                                 // and bar's number in lowTF, calculated highTF;
                                                 // (symbol, lowTF, bar's number, highTF)     
      if (bb==-1) continue;       
      MacdBuffer[i] =iMACD(Symbol(), VarPeriod, FastEMA, SlowEMA, SignalSMA, AppliedPrice, 0, bb);
      SignalBuffer[i]=iMACD(Symbol(),VarPeriod, FastEMA, SlowEMA, SignalSMA, AppliedPrice, 1, bb);
      i--;
      }
//---- done
   return(0);
  }
//+------------------------------------------------------------------+
int HighBar(string symbol,int TFLow,int BarLow,int TFHigh) 
                                                   // definition of HighBar, having symbol, lowTF,
                                                   // and bar's number in lowTF, calculated highTF;
                                                   // (symbol, lowTF, bar's number, highTF)     
 {
   datetime BarTimeLow=iTime(symbol, TFLow, BarLow);    // time's value of bar means in BarLow
   int error=GetLastError();
   if(error==4066) return (-1);
   
   int res=iBarShift(symbol, TFHigh, BarTimeLow, false);// displacement of bar means in BarTimeLow
   error=GetLastError();
   if(error==4066) return (-1);
   return (res);
 }
//+------------------------------------------------------------------+