#property  copyright "Copyright © 2005, Yura Prokofiev"
#property  link      "Yura.prokofiev@gmail.com"

#property  indicator_separate_window
#property  indicator_buffers 4
#property  indicator_color1  Blue
#property  indicator_color2  Lime
#property  indicator_color3  Red
#property  indicator_color4  Gray
 
extern int period=8;

extern int WingDingUp = 110;
extern int WingDingDn = 110;
extern bool arrows=0;
extern bool trace=1;
extern double  tracek=1.5;

extern int  shift=0;

double         ExtBuffer0[];
double         ExtBuffer1[];
double         ExtBuffer2[];
double         ExtBuffer3[];


int init()
  {
 if (arrows)
         {
    SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1,WingDingUp); SetIndexEmptyValue(1,EMPTY_VALUE);
    SetIndexStyle(2,DRAW_ARROW); SetIndexArrow(2,WingDingDn); SetIndexEmptyValue(2,EMPTY_VALUE);
         }        
   else           
         {
   SetIndexStyle(0,DRAW_NONE);
   SetIndexStyle(1,DRAW_HISTOGRAM);
   SetIndexStyle(2,DRAW_HISTOGRAM);
   SetIndexStyle(0,DRAW_NONE);      if (trace) SetIndexStyle(0,DRAW_SECTION);
         }
   


   
   IndicatorDigits(Digits+1);


  for (int i=0; i<indicator_buffers; i++)
  SetIndexShift(i,shift); 

   SetIndexBuffer(0,ExtBuffer0);
   SetIndexBuffer(1,ExtBuffer1);
   SetIndexBuffer(2,ExtBuffer2);
   SetIndexBuffer(3,ExtBuffer3);


   IndicatorShortName("SOLAR WIND al ts ");
   SetIndexLabel(1,NULL);
   SetIndexLabel(2,NULL);

   return(0);
  }


int start()
  {
   //int     period=10;
   int    limit;
   int    counted_bars=IndicatorCounted();
   double prev,current,old;
   double Value=0,Value1=0,Value2=0,Fish=0,Fish1=0,Fish2=0;
   double price;
   double MinL=0;
   double MaxH=0;  
   
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
   for(int i=0; i<limit; i++)
    {  MaxH = High[Highest(NULL,0,MODE_HIGH,period,i)];
       MinL = Low[Lowest(NULL,0,MODE_LOW,period,i)];
      price = (High[i]+Low[i])/2;
      Value = 0.33*2*((price-MinL)/(MaxH-MinL)-0.5) + 0.67*Value1;     
      Value=MathMin(MathMax(Value,-0.999),0.999); 
      ExtBuffer0[i]=0.5*MathLog((1+Value)/(1-Value))+0.5*Fish1;
      Value1=Value;
      Fish1=ExtBuffer0[i];
    }
  
     for( i=0; i<limit; i++)      ExtBuffer3[1]=tracek*ExtBuffer0[1];

  
  
   bool up=true;
   for(i=limit; i>=0; i--)
     {   
      current=ExtBuffer0[i];
      prev=ExtBuffer0[i+1];
      if (((current<0)&&(prev>0))||(current<0))   up= false;    
      if (((current>0)&&(prev<0))||(current>0))   up= true;
      if(!up)
        {
         if(arrows)  ExtBuffer2[i]=0.0;
         else        ExtBuffer2[0]=tracek*current;
                     ExtBuffer1[0]=EMPTY_VALUE;
        }
       else
         {
         if(arrows)  ExtBuffer1[i]=0.0;
         else        ExtBuffer1[0]=tracek*current;
                     ExtBuffer2[0]=EMPTY_VALUE;
         }
     
     
     
     }
    // ExtBuffer3[i]=EMPTY_VALUE;

   {//if (trace)
//ExtBuffer3[i+1]=ExtBuffer0[i+1];
}
   return(0);
  }