DVO_colorbars

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

//|                         DVO - David Varadi Oscillator.mq4 |

//|                                                           |

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

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

#property description "MT4 Code by  Max Michael 2022"

#property indicator_chart_window

//#property indicator_separate_window

#property indicator_minimum 0

#property indicator_maximum 100

#property indicator_buffers 6

#property indicator_color1 LimeGreen //wick

#property indicator_color2 Red       //wick

#property indicator_color3 LimeGreen //candle

#property indicator_color4 Red       //candle

#property indicator_color5 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	   BarWidth = 1;

extern int	CandleWidth = 3;

extern int     Level_UP = 60;

extern int     Level_DN = 40;

extern int      MaxBars = 1000;



double  Bar1[],

        Bar2[],

		  Candle1[],

		  Candle2[];

double  DVObuffer[];  

double  SMAbuffer[];  



int     trend;



int init()

{

	SetIndexBuffer(0,Bar1);

	SetIndexBuffer(1,Bar2);				

	SetIndexBuffer(2,Candle1);

	SetIndexBuffer(3,Candle2);

	SetIndexStyle(0,DRAW_HISTOGRAM,0,BarWidth);

	SetIndexStyle(1,DRAW_HISTOGRAM,0,BarWidth);

	SetIndexStyle(2,DRAW_HISTOGRAM,0,CandleWidth);

	SetIndexStyle(3,DRAW_HISTOGRAM,0,CandleWidth);

   SetIndexBuffer(4,DVObuffer); SetIndexStyle(4,DRAW_NONE);

   SetIndexBuffer(5,SMAbuffer); SetIndexStyle(5,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=MathMin(MaxBars,Bars-1);

   

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

   {

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

      // Rank average between close and median

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

      if (trend<=0 && DVObuffer[i] >= Level_UP) trend= 1;

      if (trend>=0 && DVObuffer[i] <= Level_DN) trend=-1;

      if      (trend== 1) SetCandleColor(1,i);

      else if (trend==-1) SetCandleColor(2,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);

}



void SetCandleColor(int col, int i)

{

	double high,low,bodyHigh,bodyLow;

	{

		bodyHigh = MathMax(Open[i],Close[i]);

		bodyLow  = MathMin(Open[i],Close[i]);

		high		= High[i];

		low		= Low[i];

	}

	Bar1[i]= low;	Candle1[i]= bodyLow;

	Bar2[i]= low;	Candle2[i]= bodyLow;

	

	switch(col)

	{

		case 1: 	Bar1[i]= high;	Candle1[i]= bodyHigh;	break;

		case 2: 	Bar2[i]= high;	Candle2[i]= bodyHigh;	break;

	}

}



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

//| 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;

}