maxBar

// corewintt
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Coral
#property indicator_color2 SeaGreen
#property indicator_color3 Green
//---- input parameters
extern int       Median=10;
extern int       Max=10;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(2,ExtMapBuffer3);

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
   if(counted_bars==0) limit-=1+Max;

   double diff;
   for(int i=0; i<limit;i++)
      ExtMapBuffer1[i]=High[i]-Low[i];
   for(i=0; i<limit;i++)
      ExtMapBuffer2[i]=iMAOnArray(ExtMapBuffer1,0,Median,0,MODE_SMA,i);

   i=0;
   while(i<limit)
     {
      ExtMapBuffer3[i]=ExtMapBuffer2[i];
      for(int R=0; R<Max;R++) if(ExtMapBuffer3[i]<ExtMapBuffer2[i+R]) ExtMapBuffer3[i]=ExtMapBuffer2[i+R];
      i++;
     }

//----
   return(0);
  }
//+------------------------------------------------------------------+