as_HHLL

#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Red
#property indicator_color2 Blue 
#property indicator_color3 Gold
//--------------------------------------
extern int p=48;
extern bool SA=false;
extern bool SPR=false;
//--------------------------------------
double hh[],ll[],ss[];
double spr;
//*******************************************
int init()  
{   
   SetIndexBuffer(0,hh);   
   SetIndexBuffer(1,ll);
   SetIndexBuffer(2,ss);  
   return(0);  
}
//*******************************************
int start()  
{   
   int cbi,IC=IndicatorCounted();
   if (Bars-IC<3) cbi=Bars-IC-1; else 
   {
      if (SPR) spr=MarketInfo(Symbol(),MODE_SPREAD)*Point; else spr=0.0;
      cbi=Bars-p-1;
   }    
   //------------------------------------
   for(int i=cbi; i>=0; i--)
   {                              
      hh[i]=High[iHighest(NULL,0,MODE_HIGH,p,i)]+spr;
      ll[i]=Low[iLowest(NULL,0,MODE_LOW,p,i)];
      if (SA) ss[i]=(hh[i]+ll[i])/2;
   }   
   //------------------------------------
   return(0);  
}
//********************************************