//+------------------------------------------------------------------+
//|                                                 Grucha Index.mq4 |
//|                                                   gaa1@poczta.fm |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Grzegorz Antosiewicz"
#property link      "gaa1@poczta.fm "

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue

#property indicator_minimum 0
#property indicator_maximum 100
//---- buffers
double ExtMapBuffer1[];
double tab[];
double srednia[];
double dResult, gora,dol, suma,close,open,wynik;


extern int Okresy= 10 ;
extern int MA_Okresy= 10 ;

int init()
  {
  IndicatorBuffers(3);
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexLabel(0,"Grucha % Index");
   SetIndexLabel(1,"Ma of Grucha % Index");
   SetIndexBuffer(1,srednia);
   SetIndexBuffer(2,tab);
   SetIndexDrawBegin(0, Okresy);
   
   
   
//----
   return(1);
  }

int start()
  {
 Comment("\nIf you need MQL CODER quote to AUTOR."
  +"\n\n- polish student of computer since with big experience in mql"+" \n"+
 "\n                                     mail to:\n\n>>>>>>>>>>>>   gaa1@poczta.fm    <<<<<<<<<<< " 
 +"\n\nLOW PRICE and HIGH QUAILTY"
 );
 
 
   int    counted_bars=IndicatorCounted();
   
//---- check for possible errors
   if (counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if (counted_bars>0) counted_bars--;
   
   int   pos=Bars-counted_bars;
   

 
 
//---- główna pętla
   while(pos>=0)
{
      close= Close[pos];
      open = Open[pos];
           
      dResult = open - close ;                          //wartos swiecy do zmiennej
      tab[pos]= dResult; //przypisuje wartosc do tablicy

     
      if(Bars-pos > (Okresy-1) )             //sprawdzam czy istnieje n elemntowa tablica
  {
      gora = 0;
      dol  = 0;
      for(int l = pos + (Okresy-1); l>=pos; l--)      //odliczam n okresow
     {
      if(tab[l]<0)
      {
      gora += tab[l];
      }                    //sumuje wartosci ze wzrostowych slupkow  do gora
      else if(tab[l]>=0)
      {
      dol -= tab[l]
      ;
      }         
       
     }
      if(dol<=0)
      {dol = dol*(-1);}
      if(gora<=0)
      {gora = gora*(-1);}
      suma = dol + gora ; // sumuje wartosci wszytkich slupkow
           
      if(suma == 0)
      {wynik = 0;
      //Print("Suma = 0");
      }     
  }
                   

       
        if(suma >0)
      {
         wynik =
         ( (gora / suma) *100
         );
      }
         else
        {
        wynik = 0 ;
        }
         
                        
         ExtMapBuffer1[pos]= wynik ;
         pos--;
     
    //Comment(dol,"dol",gora,"gora" );
     }

   int   index=Bars-MA_Okresy;
   
    while(index>=0)
 {    
    srednia[index]=iMAOnArray(ExtMapBuffer1,0,MA_Okresy,0,0,index);
     
   //Comment(tab2[index],"srednia->",srednia[index]);  
   index--;
   
 }
   
   return(0);
  }
//+------------------------------------------------------------------+