вот интересно будет

//+------------------------------------------------------------------+
//|                                                   InrunInduk.mq4 |
//|                                              Copyright 2018, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2018, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict
#property indicator_chart_window

#property indicator_buffers 3

#property indicator_color1 Red
#property indicator_width1 2
#property indicator_color2 Red
#property indicator_width2 2 
#property indicator_color3 Red
#property indicator_width3 2 

double mi[];
double up[];
double dn[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexStyle(0,DRAW_LINE);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(0,mi);
   SetIndexBuffer(1,up);
   SetIndexBuffer(2,dn);
//---
   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[])
  {
//---
   for(int i=0;i<1111;i++)
     {
      mi[i]=(high[i]+low[i])/2;      
      double sum=(high[i]-low[i]);      
      up[i]=mi[i]+sum;
      dn[i]=mi[i]-sum;
     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+