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Group: Metatrader MQ4 Indicators

Title: Hull Trend

Description: Based on Hull Moving Average, this Trend indicator will identify bullish trend and paints bars blue or identify bearish trend and paints bars red

//+------------------------------------------------------------------+
//|                                                   Hull Trend.mq4 |
//|                                     Copyright © 2005, adoleh2000 |
//|                                             adoleh2000@yahoo.com |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2005, adoleh2000."
#property  link      "adoleh2000@yahoo.com"
//---- indicator settings
#property  indicator_chart_window
#property  indicator_buffers 4
#property  indicator_color1  Blue
#property  indicator_color2  Red
#property  indicator_color3  EMPTY
#property  indicator_color4  EMPTY



//---- indicator parameters
extern int HMA_Period=20;
extern double Price=PRICE_CLOSE;
extern double Displacement=0;
//---- indicator buffers
double ind_buffer0[];
double ind_buffer1[];
double HighBuffer[];
double LowBuffer[];



int        draw_begin0;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicator buffers mapping
   //IndicatorBuffers(4);
//   ArraySetAsSeries(ind_buffer1,true);
//---- drawing settings
   SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,1);
   SetIndexStyle(1,DRAW_HISTOGRAM,STYLE_SOLID,1);
   SetIndexStyle(2,DRAW_LINE,STYLE_SOLID,1);
   SetIndexStyle(3,DRAW_LINE,STYLE_SOLID,1);
   

   SetIndexBuffer(0,HighBuffer);
   SetIndexBuffer(1,LowBuffer);
   SetIndexBuffer(2,ind_buffer0);
   SetIndexBuffer(3,ind_buffer1);



   draw_begin0=HMA_Period+MathFloor(MathSqrt(HMA_Period));

   SetIndexDrawBegin(0,draw_begin0);
   SetIndexDrawBegin(1,draw_begin0);
   SetIndexDrawBegin(2,draw_begin0); 
   SetIndexDrawBegin(3,draw_begin0);

   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+1);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("HMA("+HMA_Period+")");
   SetIndexLabel(0,"Hull Moving Average");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Averages Convergence/Divergence                           |
//+------------------------------------------------------------------+
int start()
  {
   int limit,i,shift;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<1)
     {
      for(i=1;i<=draw_begin0;i++) ind_buffer0[Bars-i]=0;
      for(i=1;i<=HMA_Period;i++) ind_buffer1[Bars-i]=0;
     }
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
//---- MA difference counted in the 1-st buffer
   for(i=0; i<limit; i++)
      ind_buffer1[i]=iMA(NULL,0,MathFloor(HMA_Period/2),0,MODE_LWMA,Price,i)*2-iMA(NULL,0,HMA_Period,0,MODE_LWMA,Price,i);
//---- HMA counted in the 0-th buffer
   for(i=0; i<limit; i++)
      ind_buffer0[i]=iMAOnArray(ind_buffer1,0,MathFloor(MathSqrt(HMA_Period)),0,MODE_LWMA,i+Displacement);
      
      //Comment ("MA=",ind_buffer1[i],"; ","HMA=",ind_buffer0[i]);

for (shift=i; shift>=0;shift--)
{
      if (ind_buffer1[shift] > ind_buffer0[shift]) 
   { 
      HighBuffer[shift]=High[shift];
      LowBuffer[shift]=Low[shift]; 
   }
   
   else

if (ind_buffer1[shift]<  ind_buffer0[shift]) 
   { 
      LowBuffer[shift]=High[shift];
      HighBuffer[shift]=Low[shift];
    }
}
//---- done
   return(0);
  }

Author/Source: adoleh2000