algorithmic-trading - 如何使用 CopyRates() 搜索和过滤看涨吞没形态的多个时间范围

Question

我正在尝试使用 CopyRates()在多个时间范围内(所有时间范围 H2 到 M10 内H4 收盘后的看涨蜡烛)寻找看涨吞没烛台模式(看跌蜡烛，然后是更大的看涨蜡烛)。我看了CopyRates()的定义但我发现实现起来有点困难。这里的想法来自我想要过滤具有最大看跌与看涨蜡烛对比率的模式的模式。看看我在下面做了什么:
在 OnTick() :

for (int i=ArraySize(timeframes); i>=1; i--)   {
    
    if(CopyRates(Symbol(), timeframes[i - 1], 1, MyPeriod, rates)!=MyPeriod) {
        Print("Error CopyRates errcode = ",GetLastError()); 
        return;
    }

    // Using bullish engulfing pattern:
    if ((rates[numCandle].open < rates[numCandle].close) &&
        (rates[numCandle + 1].open > rates[numCandle + 1].close) &&
        (rates[numCandle + 1].open < rates[numCandle].close) &&
        (rates[numCandle + 1].close > rates[numCandle].open)) {

        // Not too certain what should be done here
    }
}

这是其他相关代码:

input int numCandle=0; 
MqlRates rates[];
ENUM_TIMEFRAMES timeframes[7] = {PERIOD_H2, PERIOD_H1, PERIOD_M30, PERIOD_M20, PERIOD_M15, PERIOD_M12, PERIOD_M10};

void OnInit() {
   ArraySetAsSeries(rates, true);
}

更新
以下是看涨吞没形态的定义:

如上图所示，看涨吞没形态是先看跌蜡烛，然后是看涨蜡烛。看跌蜡烛的开盘价小于看涨蜡烛的收盘价，而看跌蜡烛的收盘价大于看涨蜡烛的开盘价。请注意，在某些情况下，看跌蜡烛的收盘价仅比看涨蜡烛的开盘价高一小部分。每根蜡烛的主体尺寸都大于其上下灯芯的总和。

Answer 1

     ENUM_TIMEFRAMES timeframes[7] = {PERIOD_H2, PERIOD_H1, PERIOD_M30, PERIOD_M20, PERIOD_M15, PERIOD_M12, PERIOD_M10};
     //ENUM_TIMEFRAMES timeframes[4] = {PERIOD_H1, PERIOD_M30, PERIOD_M15, PERIOD_M5};
     //---
     const int LONG=1, SHORT=-1, NO_DIR=0;
     const ENUM_TIMEFRAMES timeframeHighest = PERIOD_H4;
     string bestRatioObjectName="bestBullish2BearishPattern!";
     
     datetime lastCandleTime=0;
     
     void OnTick()
     {
        if(!isNewBar(PERIOD_H4))
           return;
        //most likely you will call this block after new bar check?
        MqlRates rates[];
        ArraySetAsSeries(rates,true);
        if(CopyRates(_Symbol,timeframeHighest,0,2,rates)==-1)
        {
           printf("%i %s: failed to load/copy rates on %d. error=%d",__LINE__,__FILE__,PeriodSeconds(timeframeHighest)/60,_LastError);
           return;
        }
        if(getCandleDir(rates[1])!=LONG)
           return;
        const datetime timeStart=rates[1].time, timeEnd=rates[0].time;   //within a bullish H4 candle - DONE
        
        double bestRatio = -1;//once a bearish2bullish ratio is higher, we'll move to new place
        for(int i=ArraySize(timeframes)-1;i>=0;i--)
        {
           if(CopyRates(_Symbol,timeframes[i],timeStart,timeEnd,rates)<0)
           {
              printf("%i %s: failed to copy rates on %d. error=%d",__LINE__,__FILE__,PeriodSeconds(timeframeHighest)/60,_LastError);
              return;
           }
           processRates(rates,bestRatio,bestRatioObjectName);
        }
        printf("%i %s: best=%.5f, objName =%s: %.5f-%.5f",__LINE__,__FILE__,bestRatio,bestRatioObjectName,
         ObjectGetDouble(0,bestRatioObjectName,OBJPROP_PRICE1),ObjectGetDouble(0,bestRatioObjectName,OBJPROP_PRICE2));
        //ExpertRemove();//for scripting, a one time call
     }
     bool isNewBar(const ENUM_TIMEFRAMES tf)
       {
        const datetime time=iTime(_Symbol,tf,0);
        if(time>lastCandleTime)
          {
           lastCandleTime=time;
           return true;
          }
        return false;
       }
     int getCandleDir(const MqlRates& rate) // candle direction: +1 for BULL, -1 for BEAR
       {
        if(rate.close-rate.open>_Point/2.)
           return 1;
        if(rate.open-rate.close>_Point/2.)
           return-1;
        return 0;
       }
     void processRates(const MqlRates& rates[],double &best,const string bestObjName)
     {
        for(int i=ArraySize(rates)-2; i>0; /* no sense to catch last candle - we cant compare it with anybody */ i--)
        {
           if(getCandleDir(rates[i])!=LONG)
              continue;//current - bullish
           if(getCandleDir(rates[i+1])!=SHORT)
              continue;//prev - bearish
           if(rates[i].close-rates[i+1].open>_Point/2.){}
           else continue;
           if(rates[i+1].close-rates[i].open>_Point/2.){}
           else continue;
           const double body=rates[i].close-rates[i].open, twoWicks = rates[i].high-rates[i].low- body;
           if(body<twoWicks)
              continue;   //Each of the candles has a body size bigger than it’s upper and lower wicks combined.
     //---
           const double prevBody = rates[i+1].open - rates[i+1].close;
           const double newRatio = body / prevBody;
           if(newRatio>best) // eventually we'll find best bull2bear ratio
           {
              moveRectangle(rates[i+1],rates[i].time,bestObjName);
              best = newRatio;
           }
        }
     }
     void moveRectangle(const MqlRates& rate,const datetime rectEnd,const string objectName)
     {
        if(ObjectFind(0,objectName)<0)
        {
           if(!ObjectCreate(0,objectName,OBJ_RECTANGLE,0,0,0,0,0))
           {
              printf("%i %s: failed to draw %s. error=%d",__LINE__,__FILE__,objectName,_LastError);
              return;
           }
           //add GUI things like how to display the rectangle
        }
        //moving the rectangle to a new place, even for the first time
        ObjectSetDouble(0,objectName,OBJPROP_PRICE,0,rate.open);
        ObjectSetDouble(0,objectName,OBJPROP_PRICE,1,rate.close);
        ObjectSetInteger(0,objectName,OBJPROP_TIME,0,rate.time);
        ObjectSetInteger(0,objectName,OBJPROP_TIME,1,rectEnd);
     }