correlation_v4

//+------------------------------------------------------------------+
//|                                                      ProjectName |
//|                                      Copyright 2012, CompanyName |
//|                                       http://www.companyname.net |
//+------------------------------------------------------------------+
#property  indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Aqua
double x[];
int sum=0;
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorBuffers(1);
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,x);
   SetIndexDrawBegin(0,0);
   SetIndexLabel(0,"x");
   SetIndexShift(0,0);
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int j,time,t;
   time=GetTickCount();
   t=time%2;
   if(t==0){sum=sum+1;}
   if(t==1){sum=sum-1;}
   x[0]=sum;
   for(j=ArraySize(x)-1;j>=1;j--){x[j]=x[j-1];}
   return(0);
  }
//+------------------------------------------------------------------+