Highest Lowest

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

//|                                               Highest Lowest.mq5 |

//|                              Copyright © 2018, Vladimir Karputov |

//|                                           http://wmua.ru/slesar/ |

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

#property copyright "Copyright © 2018, Vladimir Karputov"

#property link      "http://wmua.ru/slesar/"

#property version   "1.000"

#property indicator_chart_window

#property indicator_buffers 2 

#property indicator_plots   2 

//--- plot Arrows 

#property indicator_label1  "Highest" 

#property indicator_type1   DRAW_ARROW 

#property indicator_color1  clrBlue 

#property indicator_width2  1 

#property indicator_label2  "Lowest" 

#property indicator_type2   DRAW_ARROW 

#property indicator_color2  clrRed 

#property indicator_width2  1 

//--- input parameters 

input ushort   InpHighestCode = 159;      // Symbol code to draw Highest

input ushort   InpLowestCode  = 159;      // Symbol code to draw Lowest

//--- An indicator buffers for the plot 

double         HighestBuffer[];

double         LowestBuffer[];

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- indicator buffers mapping 

   SetIndexBuffer(0,HighestBuffer,INDICATOR_DATA);

   SetIndexBuffer(1,LowestBuffer,INDICATOR_DATA);

//--- Define the symbol code for drawing in PLOT_ARROW 

   PlotIndexSetInteger(0,PLOT_ARROW,InpHighestCode);

   PlotIndexSetInteger(1,PLOT_ARROW,InpLowestCode);

//--- Set the vertical shift of arrows in pixels 

   PlotIndexSetInteger(0,PLOT_ARROW_SHIFT,-5);

   PlotIndexSetInteger(1,PLOT_ARROW_SHIFT,5);

//--- Set as an empty value 0 

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);

   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---

   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[])

  {

//---

/*

   int bar_0=0;

   int bar_rates_total_minus_1=rates_total-1;

   Comment("prev_calculated=",prev_calculated,"\n",

           "time[",bar_0,"]=",time[bar_0],"\n",

           "time[",bar_rates_total_minus_1,"]=",time[bar_rates_total_minus_1]);

*/

//---

   if(rates_total<10)

      return(0);

//---

   int limit=prev_calculated-2;

   if(prev_calculated==0)

     {

      ArrayInitialize(HighestBuffer,EMPTY_VALUE);

      ArrayInitialize(LowestBuffer,EMPTY_VALUE);

      limit=1;

     }

   if(rates_total!=prev_calculated)

      int d=0;

//---

   for(int i=limit;i<rates_total-1;i++)

     {

      if(high[i-1]<high[i] && high[i]>high[i+1])

        {

         int d=0;

         HighestBuffer[i]=high[i];

        }

      else

         HighestBuffer[i]=EMPTY_VALUE;

      //---

      if(low[i-1]>low[i] && low[i]<low[i+1])

        {

         int d=0;

         LowestBuffer[i]=low[i];

        }

      else

         LowestBuffer[i]=EMPTY_VALUE;

     }

//--- return value of prev_calculated for next call

   return(rates_total);

  }

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