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Group: Metatrader MQ4 Indicators

Title: T3

Description: T3

//+------------------------------------------------------------------+
//|                                                           T3.mq4 |
//|                                                           MojoFX |
//| http://groups.yahoo.com/group/MetaTrader_Experts_and_Indicators/ |
//+------------------------------------------------------------------+
#property copyright "MojoFX - Conversion only"
#property link      "http://groups.yahoo.com/group/MetaTrader_Experts_and_Indicators/"

#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 Red

extern int T3_Period = 14;
extern double b = 0.618;

double t3Array[];

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,3,Red);
    SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,1,White);
    
    IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
    IndicatorShortName("Moving Average "+T3_Period);
    
    SetIndexBuffer(0,t3Array);
    SetIndexLabel(0,"T3 "+T3_Period);


//---- 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;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
   
//---- indicator calculation

    for(int i=limit; i>=0; i--)
    {
        e1 = w1*Close[i] + 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;
    
        t3Array[i]=c1*e6 + c2*e5 + c3*e4 + c4*e3;
    }   
//----
   return(0);
  }
//+------------------------------------------------------------------+

Author/Source: MojoFX