Hi New here, Coding question

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Howdie folks, I just need a simple indicator with alert that compares the candle body (open-close) of previous candle to the previous previous candle body. If the previous candle body is bigger than indicator will alert.   I know candle body logic probably only a one liner, how would you write this? 
 

  1. Perhaps you should read the manual. OnCalculate - Event Handling - MQL5 Reference - Reference on algorithmic/automated trading language for MetaTrader 5
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  2. One line? Not unless you want continuous alerts.

  3. Not compiled, not tested, just typed. 

    int OnCalculate(   
   const int        rates_total,       // size of input time series
   const int        prev_calculated,   // number of handled bars at the previous call
   const datetime&  time{},            // Time array
   const double&    open[],            // Open array
   const double&    high[],            // High array
   const double&    low[],             // Low array
   const double&    close[],           // Close array
   const long&      tick_volume[],     // Tick Volume array
   const long&      volume[],          // Real Volume array
   const int&       spread[]           // Spread array
){
   ArraySetAsSeries(time,  true);
   static datetime timeCurr=0; datetime timePrev=timeCurr; timeCurr=Time[0]; if(timeCurr != timePrev){
      ArraySetAsSeries(open,  true);
      ArraySetAsSeries(close, true);
      double body1 = MathAbs( open[1] - close[1] );
      double body2 = MathAbs( open[2] - close[2] );
      if( body2 > body1) Alert("previous candle body is bigger");
   }
   return 0;
}
    Not compiled, not tested, just typed.

    Was that so hard, that you couldn't attempt it?

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