highslowssignal_v1

ÿþ//+------------------------------------------------------------------+

//|                                              HighsLowsSignal.mq5 |

//|                                    Copyright © 2006, Robert Hill |

//|                                                                  |

//+------------------------------------------------------------------+

//| Allows you to enter a number and it will then show you at        |

//| which point that many higher highs/higher lows or                |

//| lower highs/lower lows candles occur.                            |

//| It also give an alert if the current bar has the                 |

//| required number of candles before it.                            |

//+------------------------------------------------------------------+

//--- Copyright

#property copyright "Copyright © 2006, Robert Hill"

//--- a link to the website of the author

#property link      ""

//--- indicator version

#property version   "1.00"

//--- drawing the indicator in the main window

#property indicator_chart_window 

//--- two buffers are used for the indicator calculation and drawing

#property indicator_buffers 2

//--- two plots are used

#property indicator_plots   2

//+----------------------------------------------+

//| Parameters of drawing a bearish indicator    |

//+----------------------------------------------+

//--- drawing the indicator 1 as a symbol

#property indicator_type1   DRAW_ARROW

//--- pink is used for the color of the bearish indicator line

#property indicator_color1  clrMagenta

//--- indicator 1 line width is equal to 4

#property indicator_width1  4

//--- display of the indicator bullish label

#property indicator_label1  "HighsLowsSignal Sell"

//+----------------------------------------------+

//| Parameters of drawing a bullish indicator    |

//+----------------------------------------------+

//--- drawing the indicator 2 as a symbol

#property indicator_type2   DRAW_ARROW

//--- light blue is used as the color of the bullish line of the indicator

#property indicator_color2  clrDodgerBlue

//--- indicator 2 line width is equal to 4

#property indicator_width2  4

//--- display of the bearish indicator label

#property indicator_label2 "HighsLowsSignal Buy"

//+----------------------------------------------+

//| declaration of constants                     |

//+----------------------------------------------+

#define RESET 0    // A constant for returning the indicator recalculation command to the terminal

//+----------------------------------------------+

//| Indicator input parameters                   |

//+----------------------------------------------+

input uint HowManyCandles=3;  // The number of candlesticks of a directed price change

//+----------------------------------------------+

//--- declaring dynamic arrays that further

//--- will be used as indicator buffers

double SellBuffer[];

double BuyBuffer[];

//--- declaration of integer variables for the indicators handles

int ATR_Handle;

//--- declaration of integer variables for the start of data calculation

int min_rates_total;

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- initialization of global variables 

   int ATR_Period=15;

   min_rates_total=int(MathMax(ATR_Period,4));

//--- Getting the handle of the ATR indicator

   ATR_Handle=iATR(NULL,0,ATR_Period);

   if(ATR_Handle==INVALID_HANDLE)

     {

      Print(" Failed to get handle of the ATR indicator");

      return(INIT_FAILED);

     }

//--- set dynamic array as an indicator buffer

   SetIndexBuffer(0,SellBuffer,INDICATOR_DATA);

//--- shifting the start of drawing of the indicator 1

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//--- indicator symbol

   PlotIndexSetInteger(0,PLOT_ARROW,171);

//--- restriction to draw empty values for the indicator

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0);

//--- indexing elements in the buffer as in timeseries

   ArraySetAsSeries(SellBuffer,true);

//--- set dynamic array as an indicator buffer

   SetIndexBuffer(1,BuyBuffer,INDICATOR_DATA);

//--- shifting the starting point of the indicator 2 drawing

   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);

//--- indicator symbol

   PlotIndexSetInteger(1,PLOT_ARROW,171);

//--- restriction to draw empty values for the indicator

   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0);

//--- indexing elements in the buffer as in timeseries

   ArraySetAsSeries(BuyBuffer,true);

//--- setting the format of accuracy of displaying the indicator

   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);

   IndicatorSetString(INDICATOR_SHORTNAME,"HighsLowsSignal");

//--- initialization end

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function                              |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  {

//--- checking if the number of bars is enough for the calculation

   if(BarsCalculated(ATR_Handle)<rates_total || rates_total<min_rates_total) return(RESET);

//--- declarations of local variables 

   int to_copy,limit,bar,HigherHighs,HigherLows,LowerHighs,LowerLows;

   double ATR[];

//--- calculations of the necessary amount of data to be copied

//--- and the 'limit' starting index for the bars recalculation loop

   if(prev_calculated>rates_total || prev_calculated<=0)// checking for the first start of calculation of an indicator

     {

      limit=rates_total-min_rates_total; // starting index for the calculation of all bars

     }

   else

     {

      limit=rates_total-prev_calculated; // starting index for the calculation of new bars

     }

   to_copy=limit+1;

//--- copy newly appeared data in the ATR[] array

   if(CopyBuffer(ATR_Handle,0,0,to_copy,ATR)<=0) return(RESET);

//--- apply timeseries indexing to array elements  

   ArraySetAsSeries(ATR,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

//--- main calculation loop of the indicator

   for(bar=limit; bar>=0 && !IsStopped(); bar--)

     {

      HigherHighs=0;

      HigherLows=0;

      LowerHighs=0;

      LowerLows=0;

      int end=bar+int(HowManyCandles);

      for(int index=bar; index<end; index++)

        {

         int index1=index+1;

         if(high[index]>high[index1]) HigherHighs++;

         if(low[index]>low[index1]) HigherLows++;

         if(high[index]<high[index1]) LowerHighs++;

         if(low[index]<low[index1]) LowerLows++;

        }

      BuyBuffer[bar]=0.0;

      SellBuffer[bar]=0.0;     

      if(HigherHighs==HowManyCandles && HigherLows==HowManyCandles) BuyBuffer[bar]=low[bar]-ATR[bar]*3/8;

      else if(LowerHighs==HowManyCandles && LowerLows==HowManyCandles) SellBuffer[bar]=high[bar]+ATR[bar]*3/8;

     }

//---     

   return(rates_total);

  }

//+------------------------------------------------------------------+