MTF_MACD_alpha

//+------------------------------------------------------------------+
//|                                               MTF_MACD_alpha.mq4 |
//|                                Copyright © 2005, David W. Thomas |
//|                                           mailto:davidwt@usa.net |
//|          mtf            www.forex-tsd.com      2006, Keris2112 ik|
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Keris2112"
#property link      "http://www.forex-tsd.com"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Gold  
#property indicator_color2 FireBrick
#property indicator_color3 SlateGray
#property indicator_level1 0


//---- input parameters
/*************************************************************************
PERIOD_M1   1
PERIOD_M5   5
PERIOD_M15  15
PERIOD_M30  30 
PERIOD_H1   60
PERIOD_H4   240
PERIOD_D1   1440
PERIOD_W1   10080
PERIOD_MN1  43200
You must use the numeric value of the timeframe that you want to use
when you set the TimeFrame' value with the indicator inputs.
---------------------------------------
PRICE_CLOSE    0 Close price. 
PRICE_OPEN     1 Open price. 
PRICE_HIGH     2 High price. 
PRICE_LOW      3 Low price. 
PRICE_MEDIAN   4 Median price, (high+low)/2. 
PRICE_TYPICAL  5 Typical price, (high+low+close)/3. 
PRICE_WEIGHTED 6 Weighted close price, (high+low+close+close)/4. 
You must use the numeric value of the Applied Price that you want to use
when you set the 'applied_price' value with the indicator inputs.
**************************************************************************/
extern int TimeFrame=0;
extern int       FastMAPeriod=6;
extern int       SlowMAPeriod=13;
extern int       SignalMAPeriod=5;

//---- buffers
double MACDLineBuffer[];
double SignalLineBuffer[];
double HistogramBuffer[];

//---- variables
double alpha = 0;
double alpha_1 = 0;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+1);
   //---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,MACDLineBuffer);
   SetIndexDrawBegin(0,SlowMAPeriod);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,SignalLineBuffer);
   SetIndexDrawBegin(1,SlowMAPeriod+SignalMAPeriod);
   SetIndexStyle(2,DRAW_HISTOGRAM);
   SetIndexBuffer(2,HistogramBuffer);
   SetIndexDrawBegin(2,SlowMAPeriod+SignalMAPeriod);
   //---- name for DataWindow and indicator subwindow label
   IndicatorShortName("MACD_alpha("+FastMAPeriod+","+SlowMAPeriod+","+SignalMAPeriod+")");
   SetIndexLabel(0,"MACD_alpha");
   SetIndexLabel(1,"MACD_alphaSignal");
   //----
	alpha = 2.0 / (SignalMAPeriod + 1.0);
	alpha_1 = 1.0 - alpha;

//---- name for DataWindow and indicator subwindow label   
   switch(TimeFrame)
   {
      case 1 : string TimeFrameStr="Period_M1"; break;
      case 5 : TimeFrameStr="Period_M5"; break;
      case 15 : TimeFrameStr="Period_M15"; break;
      case 30 : TimeFrameStr="Period_M30"; break;
      case 60 : TimeFrameStr="Period_H1"; break;
      case 240 : TimeFrameStr="Period_H4"; break;
      case 1440 : TimeFrameStr="Period_D1"; break;
      case 10080 : TimeFrameStr="Period_W1"; break;
      case 43200 : TimeFrameStr="Period_MN1"; break;
      default : TimeFrameStr="Current Timeframe";
   }
   IndicatorShortName("MTF_MACD_alpha("+FastMAPeriod+","+SlowMAPeriod+","+SignalMAPeriod+") ("+TimeFrameStr+")");

  }
//----
   return(0);
 
//+------------------------------------------------------------------+
//| MTF MACD                                            |
//+------------------------------------------------------------------+
int start()
  {
   datetime TimeArray[];
   int    i,limit,y=0,counted_bars=IndicatorCounted();
 
// Plot defined time frame on to current time frame
   ArrayCopySeries(TimeArray,MODE_TIME,Symbol(),TimeFrame); 
   
   limit=Bars-counted_bars+TimeFrame/Period();
   for(i=0,y=0;i<limit;i++)
   {
   if (Time[i]<TimeArray[y]) y++;

/***********************************************************   
   Add your main indicator loop below.  You can reference an existing
      indicator with its iName  or iCustom.
   Rule 1:  Add extern inputs above for all neccesary values   
   Rule 2:  Use 'TimeFrame' for the indicator time frame
   Rule 3:  Use 'y' for your indicator's shift value
 **********************************************************/  
 
   MACDLineBuffer[i]=iCustom(NULL,TimeFrame,"MACD_alpha",FastMAPeriod,SlowMAPeriod,SignalMAPeriod,0,y); 
   SignalLineBuffer[i]=iCustom(NULL,TimeFrame,"MACD_alpha",FastMAPeriod,SlowMAPeriod,SignalMAPeriod,1,y); 
   HistogramBuffer[i]=iCustom(NULL,TimeFrame,"MACD_alpha",FastMAPeriod,SlowMAPeriod,SignalMAPeriod,2,y); 
   }  
     
//----  Refresh buffers +++++++++++++++++++++++++ upgrade by Raff  
   if (TimeFrame>Period()) {
     int PerINT=TimeFrame/Period()+1;
     datetime TimeArr[]; ArrayResize(TimeArr,PerINT);
     ArrayCopySeries(TimeArr,MODE_TIME,Symbol(),Period()); 
     for(i=0;i<PerINT+1;i++) {if (TimeArr[i]>=TimeArray[0]) {
 /********************************************************     
    Refresh buffers:         buffer[i] = buffer[0];
 ********************************************************/  

 MACDLineBuffer[i] = MACDLineBuffer[0];
 SignalLineBuffer[i]= SignalLineBuffer[0];
 HistogramBuffer[i]= HistogramBuffer[0];

   } } }
//+++++++++++++++++++++++++++++++++++++++++++++   Raff  
   return(0);
  }
//+------------------------------------------------------------------+