DVO

ÿþ//+-----------------------------------------------------------+

//| Updated                 DVO - David Varadi Oscillator.mq4 |

//|                                                           |

//| www.tradingview.com/script/m5lVzOkh-Varadi-Oscillator/    |

//+-----------------------------------------------------------+

#property description "MT4 Code by  Max Michael 2022"

#property indicator_separate_window

#property indicator_minimum 0

#property indicator_maximum 100

#property indicator_buffers 2

#property indicator_color1 Aqua

#property indicator_levelcolor DimGray

#property indicator_levelwidth 1

#property indicator_levelstyle 2

#property indicator_level1 80

#property indicator_level2 20

#property strict



extern int     Length = 21;

extern int       Rank = 21;

extern int    MaxBars = 1000;



double        DVObuffer[];  

double        SMAbuffer[];  





int init()

{

   SetIndexBuffer(0,DVObuffer); SetIndexStyle(0,DRAW_LINE);

   SetIndexBuffer(1,SMAbuffer); SetIndexStyle(1,DRAW_NONE);

   string sShortName="DVO("+string(Length)+","+string(Rank)+")";

   IndicatorShortName(sShortName);

   SetIndexLabel(0,sShortName);

   SetIndexDrawBegin(0,Length);

   SetIndexLabel(1,"");

   IndicatorDigits(2);

   return(0);

}



int start()

{

   int limit=Bars-IndicatorCounted();

   if (limit < 0) return(-1);

   if (limit > 0) limit--;

   if (limit > MaxBars) limit=MaxBars;

   

   for(int i=limit; i>=0; i--)

   {

      SMAbuffer[i]= SMA(Length,i); // sum the ratio between close and median

      DVObuffer[i]= PercentRank(Rank,i);

   }

   return(0);

}



double SMA(int period, int bar)

{

   double sum=0;

   for (int x=bar; x<(bar+period); x++) sum += (Close[x]/((High[x]+Low[x])/2.0));

   return(sum/period);

}



//+------------------------------------------------------------------+

//| PercentRank                                                      |

//+------------------------------------------------------------------+

double PercentRank(int period_rnk, int index)

{

   double count=0;

   for(int i=1; i<=period_rnk; i++) if(SMAbuffer[index]>SMAbuffer[index+i]) count++;

   return 100.0*count/(double)period_rnk;

}