//+------------------------------------------------------------------+
//|                                                 IND Inverse.mq4  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, ..."
#property link      "http://www.forex-tsd.com/"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Maroon
#property indicator_color2 Green
#property indicator_color3 Red

//---- input parameters
extern int iPeriod = 1;
extern int cbars = 1000;
//---- buffers
double Buffer[];
double SigBuffer[];
double DirBuffer[];
//----
int last = 0;
//----
//+------------------------------------------------------------------+
//| Init                                                             |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
    IndicatorDigits(Digits + 2);
    SetIndexStyle(0, DRAW_LINE);
    SetIndexBuffer(0, Buffer);
    SetIndexStyle(1, DRAW_ARROW);
    SetIndexBuffer(1, SigBuffer);
    SetIndexEmptyValue(1, 0);
    SetIndexArrow(1, 233);
    SetIndexStyle(2, DRAW_ARROW);
    SetIndexBuffer(2, DirBuffer);
    SetIndexEmptyValue(2, 0);
    SetIndexArrow(2, 234);
//----
    return(0);
  }
//+------------------------------------------------------------------+
//| Parabolic Sell And Reverse system                                |
//+------------------------------------------------------------------+
int start()
  {
    if(last == 0) 
        ArrayInitialize(DirBuffer,0);
    last = Bars;
    int b = 0, i = 0;
    for(i = 0; i <= cbars; i++)
      {
        // Easy to read
        double HD = High[Highest(NULL, 0, MODE_HIGH, (iPeriod* 20), i)];
        double LD = Low[Lowest(NULL, 0, MODE_LOW, (iPeriod* 20), i)];
        double amplitude = HD - LD;
        if(amplitude != 0)
            Buffer[i] = ((Close[i] - (HD - (amplitude / 2))) / amplitude)*iPeriod;
        else
            Buffer[i] = Close[i]*iPeriod;
      }
    double dir = 0;
    for(i = cbars; i >= 0; i--)
      {
        SigBuffer[i] = 0;
        DirBuffer[i] = 0;
        if(Buffer[i]*Buffer[i+1] < 0)
          {
            if(Buffer[i] < 0) 
                DirBuffer[i] = Buffer[i];
            else 
                SigBuffer[i] = Buffer[i];
          }
      }
//----
   return(0);
  }
//+------------------------------------------------------------------+