Pivot_only_M30

//+------------------------------------------------------------------+
//|                                                   Pivot_only_M30.mq4 |
//|                                                   upgrade by Darkkiller |  
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//|                                                 AllPivots_v1.mq4 |
//|                                  Copyright © 2006, Forex-TSD.com |
//|                         Written by IgorAD,igorad2003@yahoo.co.uk |   
//|            http://finance.groups.yahoo.com/group/TrendLaboratory |                                      
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Forex-TSD.com "
#property link      "http://www.forex-tsd.com/"

#property indicator_chart_window

extern int  CountDays=1000;



   datetime time1;
   datetime time2;
   double open,close,high,low;
   double P;
   
   int shift, num;
     
   void ObjDel()
   {
      for (;num<=CountDays;num++)
      {
      ObjectDelete("Pivot M30["+num+"]");
      
      }
   }

   void PlotLine(string name,double value,double line_color,double style)
   {
   ObjectCreate(name,OBJ_TREND,0,time1,value,time2,value);
   ObjectSet(name, OBJPROP_WIDTH, 2);
   ObjectSet(name, OBJPROP_STYLE, style);
   ObjectSet(name, OBJPROP_RAY, false);
   ObjectSet(name, OBJPROP_BACK, true);
   ObjectSet(name, OBJPROP_COLOR, line_color);
    }        
int init()
  {

  return(0);
  }
   
   
int deinit()
  {
   ObjDel();
   Comment("");
   return(0);
  }

int start()
  {
  int i;
     
  ObjDel();
  num=0;
  
  for (shift=CountDays-1;shift>=0;shift--)
  {
  time1=iTime(NULL,PERIOD_M30,shift);
  i=shift-1;
  if (i<0) 
  time2=Time[0];
  else
  time2=iTime(NULL,PERIOD_M30,i)-Period()*60;
         
  high  = iHigh(NULL,PERIOD_M30,shift+1);
  low   = iLow(NULL,PERIOD_M30,shift+1);
  close = iClose(NULL,PERIOD_M30,shift+1);
       
  P  = (high+low+close)/3.0;
        

  time2=time1+PERIOD_M30*60;
         
 
  num=shift;
       
  PlotLine("Pivot M30["+num+"]",P,Yellow,0);
  
  }
   return(0);
  }
//+------------------------------------------------------------------+