Corr_momentum

ÿþ//------------------------------------------------------------------

#property copyright "© mladen, 2016, MetaQuotes Software Corp."

#property link      "www.forex-tsd.com, www.mql5.com"

#property version   "1.00"

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#property indicator_separate_window

#property indicator_buffers 10

#property indicator_plots   6

#property indicator_label1  "corrected momentum levels"

#property indicator_type1   DRAW_FILLING

#property indicator_color1  clrLimeGreen,clrOrange

#property indicator_label2  "corrected momentum up level"

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrLimeGreen

#property indicator_style2  STYLE_DOT

#property indicator_label3  "corrected momentum middle level"

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrSilver

#property indicator_style3  STYLE_DOT

#property indicator_label4  "corrected momentum down level"

#property indicator_type4   DRAW_LINE

#property indicator_color4  clrOrange

#property indicator_style4  STYLE_DOT

#property indicator_label5  "momentum"

#property indicator_type5   DRAW_COLOR_LINE

#property indicator_color5  clrDarkGray,clrLimeGreen,clrSandyBrown

#property indicator_style5  STYLE_DOT

#property indicator_label6  "corrected momentum"

#property indicator_type6   DRAW_COLOR_LINE

#property indicator_color6  clrDarkGray,clrLimeGreen,clrSandyBrown

#property indicator_width6  2



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enum enPrices

{

   pr_close,      // Close

   pr_open,       // Open

   pr_high,       // High

   pr_low,        // Low

   pr_median,     // Median

   pr_typical,    // Typical

   pr_weighted,   // Weighted

   pr_average,    // Average (high+low+open+close)/4

   pr_medianb,    // Average median body (open+close)/2

   pr_tbiased,    // Trend biased price

   pr_tbiased2,   // Trend biased (extreme) price

   pr_haclose,    // Heiken ashi close

   pr_haopen ,    // Heiken ashi open

   pr_hahigh,     // Heiken ashi high

   pr_halow,      // Heiken ashi low

   pr_hamedian,   // Heiken ashi median

   pr_hatypical,  // Heiken ashi typical

   pr_haweighted, // Heiken ashi weighted

   pr_haaverage,  // Heiken ashi average

   pr_hamedianb,  // Heiken ashi median body

   pr_hatbiased,  // Heiken ashi trend biased price

   pr_hatbiased2  // Heiken ashi trend biased (extreme) price

};

enum enColorOn

{

   chg_onSlope,  // change color on slope change

   chg_onLevel,  // Change color on outer levels cross

   chg_onMiddle, // Change color on middle level cross

   chg_onOrig    // Change color on momentum value cross

};



input int        MomPeriod        = 32;          // Momentum period

input int        CorrectionPeriod =  0;          // Correction period (<0 no correction =0 same as momentum period)

input enPrices   Price            = pr_close;    // Price

input enColorOn  ColorOn          = chg_onLevel; // Color change on :

input int        LevelsPeriod     = 25;          // Levels period

input double     LevelsUp         = 90;          // Upper level %

input double     LevelsDown       = 10;          // Lower level %

input bool       AlertsOn         = false;       // Turn alerts on?

input bool       AlertsOnCurrent  = true;        // Alert on current bar?

input bool       AlertsMessage    = true;        // Display messageas on alerts?

input bool       AlertsSound      = false;       // Play sound on alerts?

input bool       AlertsEmail      = false;       // Send email on alerts?

input bool       AlertsNotify     = false;       // Send push notification on alerts?



double  val[],valc[],fill1[],fill2[],levelUp[],levelMi[],levelDn[],cor[],corc[],prices[];



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void OnInit()

{

   SetIndexBuffer(0,fill1  ,INDICATOR_DATA);

   SetIndexBuffer(1,fill2  ,INDICATOR_DATA);

   SetIndexBuffer(2,levelUp,INDICATOR_DATA);

   SetIndexBuffer(3,levelMi,INDICATOR_DATA);

   SetIndexBuffer(4,levelDn,INDICATOR_DATA);

   SetIndexBuffer(5,val    ,INDICATOR_DATA);

   SetIndexBuffer(6,valc   ,INDICATOR_COLOR_INDEX);

   SetIndexBuffer(7,cor    ,INDICATOR_DATA);

   SetIndexBuffer(8,corc   ,INDICATOR_COLOR_INDEX);

   SetIndexBuffer(9,prices ,INDICATOR_CALCULATIONS);

      IndicatorSetString(INDICATOR_SHORTNAME,"\"Corrected\" momentum ("+(string)MomPeriod+","+(string)CorrectionPeriod+","+(string)LevelsPeriod+")");

}



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int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime& time[],

                const double& open[],

                const double& high[],

                const double& low[],

                const double& close[],

                const long& tick_volume[],

                const long& volume[],

                const int& spread[])

{

   if (Bars(_Symbol,_Period)<rates_total) return(-1);

   

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   int deviationsPeriod = (CorrectionPeriod>0) ? CorrectionPeriod : (CorrectionPeriod<0) ? 0 : MomPeriod ;

   int colorOn          = (deviationsPeriod>0) ? ColorOn : (ColorOn!=chg_onOrig) ? ColorOn : chg_onSlope;

   int levelPeriod      = (LevelsPeriod>1) ? LevelsPeriod : MomPeriod; 

   int i=(int)MathMax(prev_calculated-1,0); for (; i<rates_total && !_StopFlag; i++)

   {

      prices[i] = getPrice(Price,open,close,high,low,i,rates_total);

      val[i]    = prices[i]-prices[MathMax(i-MomPeriod,0)];

         double v1 =         MathPow(iDeviation(val[i],deviationsPeriod,false,i,rates_total),2);

         double v2 = (i>0) ? MathPow(cor[i-1]-val[i],2) : 0;

         double c  = (v2<v1 || v2==0) ? 0 : 1-v1/v2;

      cor[i] = (i>0) ? cor[i-1]+c*(val[i]-cor[i-1]) : val[i];

            

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         int    start = MathMax(i-levelPeriod+1,0);

         double min   = cor[ArrayMinimum(cor,start,levelPeriod)];

         double max   = cor[ArrayMaximum(cor,start,levelPeriod)];

         double range = max-min;

            levelUp[i] = min+LevelsUp  *range/100.0;

            levelDn[i] = min+LevelsDown*range/100.0;

            levelMi[i] = (levelUp[i]+levelDn[i])*0.5;

            valc[i]  = (i>0) ? (val[i]>val[i-1]) ? 1 : (val[i]<val[i-1]) ? 2 : valc[i-1]: 0;

            switch (colorOn)

            {

               case chg_onOrig :   corc[i] = (cor[i]<val[i])     ? 1 : (cor[i]>val[i])     ? 2 : (i>0) ? corc[i-1]: 0; break;

               case chg_onMiddle : corc[i] = (cor[i]>levelMi[i]) ? 1 : (cor[i]<levelMi[i]) ? 2 : (i>0) ? corc[i-1]: 0; break;

               case chg_onLevel:   corc[i] = (cor[i]>levelUp[i]) ? 1 : (cor[i]<levelDn[i]) ? 2 : (i>0) ? (cor[i]==cor[i-1]) ? corc[i-1]: 0 : 0; break;

               default :           corc[i] = (i>0) ? (cor[i]>cor[i-1]) ? 1 : (cor[i]<cor[i-1]) ? 2 : corc[i-1]: 0;

            }               

            fill2[i] = (cor[i]>levelUp[i]) ? levelUp[i] : (cor[i]<levelDn[i]) ? levelDn[i] : cor[i];

            fill1[i] = cor[i];

   }         

   manageAlerts(time,corc,colorOn,rates_total);

   return(i);

}





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void manageAlerts(const datetime& _time[], double& _trend[], int colorOn, int bars)

{

   if (AlertsOn)

   {

      int whichBar = bars-1; if (!AlertsOnCurrent) whichBar = bars-2; datetime time1 = _time[whichBar];

      if (_trend[whichBar] != _trend[whichBar-1])

      {

         string add = "slope changed to";

         switch (colorOn)

         {

            case chg_onLevel  : add = "outer level crossed";  break;

            case chg_onMiddle : add = "middle level crossed"; break;

            case chg_onOrig   : add = "momentum value crossed";

         }                  

         if (_trend[whichBar] == 1) doAlert(time1,add+" up");

         if (_trend[whichBar] == 2) doAlert(time1,add+" down");

      }         

   }

}   



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void doAlert(datetime forTime, string doWhat)

{

   static string   previousAlert="nothing";

   static datetime previousTime;

   

   if (previousAlert != doWhat || previousTime != forTime) 

   {

      previousAlert  = doWhat;

      previousTime   = forTime;



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      string message = TimeToString(TimeLocal(),TIME_SECONDS)+" "+_Symbol+" corrected momentum "+doWhat;

         if (AlertsMessage) Alert(message);

         if (AlertsEmail)   SendMail(_Symbol+" corrected momentum",message);

         if (AlertsNotify)  SendNotification(message);

         if (AlertsSound)   PlaySound("alert2.wav");

   }

}



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double workDev[];

double iDeviation(double value, int length, bool isSample, int i, int bars)

{

   if (ArraySize(workDev)!=bars) ArrayResize(workDev,bars); workDev[i] = value;

                 

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      double oldMean   = value;

      double newMean   = value;

      double squares   = 0; int k;

      for (k=1; k<length && (i-k)>=0; k++)

      {

         newMean  = (workDev[i-k]-oldMean)/(k+1)+oldMean;

         squares += (workDev[i-k]-oldMean)*(workDev[i-k]-newMean);

         oldMean  = newMean;

      }

      return(MathSqrt(squares/MathMax(k-isSample,1)));

}



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#define _pricesInstances 1

#define _pricesSize      4

double workHa[][_pricesInstances*_pricesSize];

double getPrice(int tprice, const double& open[], const double& close[], const double& high[], const double& low[], int i,int _bars, int instanceNo=0)

{

  if (tprice>=pr_haclose)

   {

      if (ArrayRange(workHa,0)!= _bars) ArrayResize(workHa,_bars); instanceNo*=_pricesSize;

         

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         double haOpen;

         if (i>0)

                haOpen  = (workHa[i-1][instanceNo+2] + workHa[i-1][instanceNo+3])/2.0;

         else   haOpen  = (open[i]+close[i])/2;

         double haClose = (open[i] + high[i] + low[i] + close[i]) / 4.0;

         double haHigh  = MathMax(high[i], MathMax(haOpen,haClose));

         double haLow   = MathMin(low[i] , MathMin(haOpen,haClose));



         if(haOpen  <haClose) { workHa[i][instanceNo+0] = haLow;  workHa[i][instanceNo+1] = haHigh; } 

         else                 { workHa[i][instanceNo+0] = haHigh; workHa[i][instanceNo+1] = haLow;  } 

                                workHa[i][instanceNo+2] = haOpen;

                                workHa[i][instanceNo+3] = haClose;

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         switch (tprice)

         {

            case pr_haclose:     return(haClose);

            case pr_haopen:      return(haOpen);

            case pr_hahigh:      return(haHigh);

            case pr_halow:       return(haLow);

            case pr_hamedian:    return((haHigh+haLow)/2.0);

            case pr_hamedianb:   return((haOpen+haClose)/2.0);

            case pr_hatypical:   return((haHigh+haLow+haClose)/3.0);

            case pr_haweighted:  return((haHigh+haLow+haClose+haClose)/4.0);

            case pr_haaverage:   return((haHigh+haLow+haClose+haOpen)/4.0);

            case pr_hatbiased:

               if (haClose>haOpen)

                     return((haHigh+haClose)/2.0);

               else  return((haLow+haClose)/2.0);        

            case pr_hatbiased2:

               if (haClose>haOpen)  return(haHigh);

               if (haClose<haOpen)  return(haLow);

                                    return(haClose);        

         }

   }

   

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   switch (tprice)

   {

      case pr_close:     return(close[i]);

      case pr_open:      return(open[i]);

      case pr_high:      return(high[i]);

      case pr_low:       return(low[i]);

      case pr_median:    return((high[i]+low[i])/2.0);

      case pr_medianb:   return((open[i]+close[i])/2.0);

      case pr_typical:   return((high[i]+low[i]+close[i])/3.0);

      case pr_weighted:  return((high[i]+low[i]+close[i]+close[i])/4.0);

      case pr_average:   return((high[i]+low[i]+close[i]+open[i])/4.0);

      case pr_tbiased:   

               if (close[i]>open[i])

                     return((high[i]+close[i])/2.0);

               else  return((low[i]+close[i])/2.0);        

      case pr_tbiased2:   

               if (close[i]>open[i]) return(high[i]);

               if (close[i]<open[i]) return(low[i]);

                                     return(close[i]);        

   }

   return(0);

}