紧急求助！EA中如何调用该指标？

2011-10-24 · 7011 阅读

紧急求助！EA中如何调用该指标？
  我有两年的外汇交易经验，今年以来运用一套超短线策略帐户资金开始出现增长。对于编程我有一些经验，对于EA我还是新手。
  我想将我的策略用EA来实现。等EA基本做出来的时候与大家分享和改进。

  现在的问题是：EA中用到指标slope direction line实现基本的趋势判断，但我不知到如何正确调用。

  double iCustom( string symbol, int timeframe, string name, ... , int mode, int shift)

  其中int mode是什么？具体对于slope direction line而言，mode应该是什么？下面语句中问号应该是什么？

  if(iCustom(NULL,PERIOD_M30,\"Slope Direction Line\",10,2,4,？,0)==？) {.....//趋势向上}


  slope direction line代码如下


  //+------------------------------------------------------------------+
  #property copyright \"MT4 release WizardSerg <a href=\"mailto:wizardserg@mail.ru\"wizardserg@mail.ru/a>, ?? ??????? ForeXMagazine #104\"
  #property link    \"wizardserg@mail.ru\"

  #property indicator_chart_window
  #property indicator_buffers 2
  #property indicator_color1 Blue
  #property indicator_color2 Red
  //---- input parameters
  extern int    period=10;
  extern int    method=2;                      // MODE_SMA
  extern int    price=4;                         // PRICE_CLOSE
  //---- buffers
  double Uptrend[];
  double Dntrend[];
  double ExtMapBuffer[];


  //+------------------------------------------------------------------+
  //| Custom indicator initialization function                      |
  //+------------------------------------------------------------------+
  int init()
  {
   IndicatorBuffers(3);
   SetIndexBuffer(0, Uptrend);
   //ArraySetAsSeries(Uptrend, true);
   SetIndexBuffer(1, Dntrend);
   //ArraySetAsSeries(Dntrend, true);
   SetIndexBuffer(2, ExtMapBuffer);
   ArraySetAsSeries(ExtMapBuffer, true);

   SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
   SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,2);

   IndicatorShortName(\"Slope Direction Line(\"+period+\")\");
   return(0);
  }

  //+------------------------------------------------------------------+
  //| Custor indicator deinitialization function                      |
  //+------------------------------------------------------------------+
  int deinit()
  {
   // ???? ????? ?????? ??????
   return(0);
  }

  //+------------------------------------------------------------------+
  //| ?????????? ???????                                              |
  //+------------------------------------------------------------------+
  double WMA(int x, int p)
  {
   return(iMA(NULL, 0, p, 0, method, price, x));
  }

  //+------------------------------------------------------------------+
  //| Custom indicator iteration function                            |
  //+------------------------------------------------------------------+
  int start()
  {
   int counted_bars = IndicatorCounted();

   if(counted_bars < 0)
      return(-1);

   int x = 0;
   int p = MathSqrt(period);
   int e = Bars - counted_bars + period + 1;

   double vect[], trend[];

   if(e > Bars)
      e = Bars;

   ArrayResize(vect, e);
   ArraySetAsSeries(vect, true);
   ArrayResize(trend, e);
   ArraySetAsSeries(trend, true);

   for(x = 0; x < e; x++)
   {
      vect[x] = 2*WMA(x, period/2) - WMA(x, period);
  //    Print(\"Bar date/time: \", TimeToStr(Time[x]), \" close: \", Close[x], \" vect[\", x, \"] = \", vect[x], \" 2*WMA(p/2) = \", 2*WMA(x, period/2), \" WMA(p) = \",  WMA(x, period));
   }

   for(x = 0; x < e-period; x++)

      ExtMapBuffer[x] = iMAOnArray(vect, 0, p, 0, method, x);

   for(x = e-period; x >= 0; x--)
   {
      trend[x] = trend[x+1];
      if (ExtMapBuffer[x]> ExtMapBuffer[x+1]) trend[x] =1;
      if (ExtMapBuffer[x]< ExtMapBuffer[x+1]) trend[x] =-1;

   if (trend[x]>0)
   { Uptrend[x] = ExtMapBuffer[x];
      if (trend[x+1]

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