Ron_Spread001

//+-----------+
//| Spread    |
//+-----------+
#property  copyright "Copyright 2005 Ron Thompson"
#property  link      "http://www.forexmt4.com/"

//---- indicator settings
#property  indicator_separate_window

#property indicator_buffers   3
#property indicator_color1  Yellow      
#property indicator_color2  Green
#property indicator_color3  Red

//---- buffers
double ExtMapBuffer1[];  //Yellow
double ExtMapBuffer2[];  //Green
double ExtMapBuffer3[];  //Red

//specific to indicator
double spread;
double spreadtot;
int    spreadticks;
double maxspread;


// bar open handling
int    bartime;

//+-----------+
//| Init      |
//+-----------+
int init()
  {
   // 233 up arrow
   // 234 down arrow
   // 158 little dot
   // 159 big dot
   // 168 open square
   // 120 box with X
   SetIndexBuffer(0,ExtMapBuffer1);   //Yellow
   SetIndexStyle(0, DRAW_LINE, STYLE_SOLID, 2);

   SetIndexBuffer(1,ExtMapBuffer2);  //Green
   SetIndexStyle(1, DRAW_LINE, STYLE_SOLID, 2);

   SetIndexBuffer(2,ExtMapBuffer3);  //Red
   SetIndexStyle(2, DRAW_LINE, STYLE_SOLID, 2);

   Print("Init complete");
  }

//+-----------+
//| DE-Init   |
//+-----------+
int deinit()
  {
   Print("DE-Init complete");
  }


//+-----------+
//| Each Tick |
//+-----------+
int start()
  {   
   int    pos;

   // draw once at open of bar 
   if(bartime!=Time[0])
     {
      bartime=Time[0];
      spreadtot=0;
      spreadticks=0;
      maxspread=0;
      ExtMapBuffer1[0]=0;
      //ExtMapBuffer2[0]=0;

     }    

   spread=Ask-Bid;

   if(spread>maxspread) maxspread=spread;

   spreadtot=spreadtot+spread;
   spreadticks++;

   ExtMapBuffer1[0] = spreadtot/spreadticks;
   //ExtMapBuffer2[0] = maxspread;
      
   Comment("Spread="+spread+"  MAXspread="+maxspread+"  Total="+spreadtot+"  Ticks="+spreadticks+"  Average=" + spreadtot/spreadticks);


  }//start