MVBT3

/*-----------------------------+
|			       |
| Shared by www.Aptrafx.com    |
|			       |
+------------------------------*/

//+------------------------------------------------------------------+
//|                                                        MVBT3.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

#property indicator_separate_window

#property indicator_buffers 1

#property indicator_color1 FireBrick

#property indicator_level1  0.0000

extern int T3_Period = 69; // I recommend 72% of the number of bars per day , M15 Chart = 96 bars per day .
extern double b = 0.72;
extern int ShowDays = 21; 

double MapBuffer[];

double e1,e2,e3,e4,e5,e6;
double c1,c2,c3,c4;
double n,w1,w2,b2,b3;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators setting
    SetIndexStyle(0,DRAW_LINE,STYLE_SOLID);
    IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
    IndicatorShortName(" MVBT3 ( "+T3_Period+" ) , ( "+b+" ) ");
    
    SetIndexBuffer(0,MapBuffer);

//---- variable reset

    e1=0; e2=0; e3=0; e4=0; e5=0; e6=0;
    c1=0; c2=0; c3=0; c4=0; 
    n=0; 
    w1=0; w2=0; 
    b2=0; b3=0;

    b2=b*b;
    b3=b2*b;
    c1=-b3;
    c2=(3*(b2+b3));
    c3=-3*(2*b2+b+b3);
    c4=(1+3*b+b3+3*b2);
    n=T3_Period;

    if (n<1) n=1;
    n = 1 + (0.5*(n-1));
    w1 = 2 / (n + 1);
    w2 = 1 - w1;
    
//----
    return(0);
  }

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit = ((ShowDays*1440)/Period());

//---- indicator calculation

    for(int i=limit; i>=0; i--)
    {
        
        double smooth1 = Volume[i];
        
        double smooth2 = Volume[i+1];
        
        e1 = ( (w1*(smooth1 - smooth2)) + w2*e1 );
        e2 = ((w1*e1) + w2*e2);
        e3 = ((w1*e2) + w2*e3);
        e4 = ((w1*e3) + w2*e4);
        e5 = ((w1*e4) + w2*e5);
        e6 = ((w1*e5) + w2*e6);
    
        MapBuffer[i]=((((c1*e6) + c2*e5) + c3*e4) + c4*e3);
        
    }   
//----
   return(0);
  }
//+------------------------------------------------------------------+