Bull老大求解！！跪谢！！

您需要 登录 才可以下载或查看，没有帐号？注册 Bull知道NonlagDOT这个指标是怎样计算出来的吗？小弟初学MQL，它的源代码看不太懂，还请各位高手指点一二。
 下面把指标的源代码粘贴上来，让大伙瞅瞅。
 
 //+------------------------------------------------------------------+
 //|                                 NonLagDOT.mq4     |
 //+------------------------------------------------------------------+
 #property copyright
 #property link   
 
 #property indicator_chart_window
 #property indicator_buffers 3
 #property indicator_color1 Yellow
 #property indicator_width1 2
 #property indicator_color2 RoyalBlue
 #property indicator_width2 2
 #property indicator_color3 Red
 #property indicator_width3 2
 
 
 //---- input parameters
 extern int   Price        = 0;
 extern int   Length       = 10;
 extern int   Displace      = 0;
 extern int   Filter       = 0;
 extern int   Color        = 1;
 extern int   ColorBarBack   = 2;
 extern double Deviation     = 0;       
 
 double Cycle = 4;
 
 //---- indicator buffers
 double MABuffer[];
 double UpBuffer[];
 double DnBuffer[];
 double price[];
 double trend[];
 
 //+------------------------------------------------------------------+
 //| Custom indicator initialization function                  |
 //+------------------------------------------------------------------+
    int init()
    {
   int ft=0;
   string short_name;
 //---- indicator line
   IndicatorBuffers(5);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexBuffer(0,MABuffer);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexBuffer(1,UpBuffer);
   SetIndexStyle(2,DRAW_ARROW);
   SetIndexBuffer(2,DnBuffer);
   SetIndexBuffer(3,price);
   SetIndexBuffer(4,trend);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
   SetIndexArrow(0,159);
   SetIndexArrow(1,159);
   SetIndexArrow(2,159);
   SetIndexArrow(3,159);
 //---- name for DataWindow and indicator subwindow label
   short_name= NonLagDot( +Length+ )
   IndicatorShortName(short_name);
   SetIndexLabel(0, NLD
   SetIndexLabel(1, Up
   SetIndexLabel(2, Dn
 //----
   SetIndexShift(0,Displace);
   SetIndexShift(1,Displace);
   SetIndexShift(2,Displace);
   
   SetIndexDrawBegin(0,Length*Cycle+Length);
   SetIndexDrawBegin(1,Length*Cycle+Length);
   SetIndexDrawBegin(2,Length*Cycle+Length);
 //----
   return(0);
    }
 
 //+------------------------------------------------------------------+
 //| NonLagMA_v4                                   |
 //+------------------------------------------------------------------+
 int start()
 {
   int    i,shift, counted_bars=IndicatorCounted(),limit;
   double alfa, beta, t, Sum, Weight, step,g;
   double pi = 3.1415926535;   
   
   double Coeff = 3*pi;
   int Phase = Length-1;
   double Len = Length*Cycle + Phase; 
   
   if ( counted_bars 0 ) limit=Bars-counted_bars;
   if ( counted_bars 0 ) return(0);
   if ( counted_bars ==0 ) limit=Bars-Len-1;
   if ( counted_bars 1 )
   for(i=1;i=0;shift--)
   {     
   Weight=0; Sum=0; t=0;
       
     for (i=0;i 0) MABuffer[shift] = (1.0+Deviation/100)*Sum/Weight;
   
     if (Filter 0)
     {
     if( MathAbs(MABuffer[shift]-MABuffer[shift+1]) Filter*Point ) MABuffer[shift]=MABuffer[shift+1];
     }
     
     if (Color 0)
     {
     trend[shift]=trend[shift+1];
     if (MABuffer[shift]-MABuffer[shift+1] Filter*Point) trend[shift]= 1;
     if (MABuffer[shift+1]-MABuffer[shift] Filter*Point) trend[shift]=-1;
       if (trend[shift] 0)
       { 
       UpBuffer[shift] = MABuffer[shift];
       if (trend[shift+ColorBarBack]
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