Bull老大求解！！跪谢！！

2011-10-19 · 8594 阅读

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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