BB stops - RSI

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

#property copyright   "mladen"

#property link        "mladenfx@gmail.com"

#property description "BB stops - RSI"

//------------------------------------------------------------------

#property indicator_separate_window

#property indicator_buffers 7

#property indicator_plots   6

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrSilver

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrGray

#property indicator_style2  STYLE_DOT

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrGray

#property indicator_style3  STYLE_DOT

#property indicator_type4   DRAW_LINE

#property indicator_color4  clrDodgerBlue

#property indicator_width4  3

#property indicator_type5   DRAW_LINE

#property indicator_color5  clrSandyBrown

#property indicator_width5  3

#property indicator_type6   DRAW_COLOR_ARROW

#property indicator_color6  clrSilver,clrDodgerBlue,clrSandyBrown

#property indicator_width6  2



//

//---

//

input int                RsiPeriod       = 14;          // RSI period

input ENUM_APPLIED_PRICE Price           = PRICE_CLOSE; // RSI Price

input int                BbPeriod        = 20;          // Bollinger stops period

input int                DeviationPeriod = 20;          // Deviations period

input double             Deviation       = 1;           // Deviation

input double             Risk            = 1;           // Risk (%)

double rsi[],bba[],bbc[],bblu[],bbld[],bmax[],bmin[];

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

//|                                                                  |

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

struct _bbReturnStruct

  {

   double            upValue;

   double            downValue;

   int               trend;

   bool              trendChange;

  };

//------------------------------------------------------------------

//

//------------------------------------------------------------------

void OnInit()

  {

   SetIndexBuffer(0,rsi,INDICATOR_DATA);

   SetIndexBuffer(1,bmax,INDICATOR_DATA);

   SetIndexBuffer(2,bmin,INDICATOR_DATA);

   SetIndexBuffer(3,bblu,INDICATOR_DATA);

   SetIndexBuffer(4,bbld,INDICATOR_DATA);

   SetIndexBuffer(5,bba,INDICATOR_DATA);  PlotIndexSetInteger(5,PLOT_ARROW,159);

   SetIndexBuffer(6,bbc,INDICATOR_COLOR_INDEX);

   IndicatorSetString(INDICATOR_SHORTNAME,"BB stops - RSI ("+(string)RsiPeriod+","+(string)BbPeriod+","+(string)DeviationPeriod+")");

  }

//

//---

//

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 &tickVolume[],

                const long &volume[],

                const int &spread[])

  {



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

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

     {

      rsi[i] = iRsi(getPrice(Price,open,close,high,low,i,rates_total),RsiPeriod,i,rates_total);

      _bbReturnStruct _result = iBbStops(rsi[i],BbPeriod,Risk,DeviationPeriod,Deviation,i,rates_total);

            bmax[i] = _result.upValue;

            bmin[i] = _result.downValue;

            bblu[i] = EMPTY_VALUE;

            bbld[i] = EMPTY_VALUE;

               if(_result.trend ==  1) { bblu[i] = _result.upValue;   bbc[i] = 1; }

               if(_result.trend == -1) { bbld[i] = _result.downValue; bbc[i] = 2; }

            bba[i]  = (_result.trendChange) ? (_result.trend==1) ? bblu[i]: bbld[i]: EMPTY_VALUE;

     }

   return(i);

  }



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

//| Custom functions                                                 |

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

#define rsiInstances 1

double workRsi[][rsiInstances*3];

#define _price  0

#define _prices 3

#define _change 1

#define _changa 2

//

//---

//

double iRsi(double price,double period,int r,int bars,int instanceNo=0)

  {

   if(ArrayRange(workRsi,0)!=bars) ArrayResize(workRsi,bars);

   int z=instanceNo*3;

//

//---

//

   workRsi[r][z+_price]=price;

   double alpha=1.0/MathMax(period,1);

   if(r<period)

     {

      int k; double sum=0; for(k=0; k<period && (r-k-1)>=0; k++) sum+=MathAbs(workRsi[r-k][z+_price]-workRsi[r-k-1][z+_price]);

      workRsi[r][z+_change] = (workRsi[r][z+_price]-workRsi[0][z+_price])/MathMax(k,1);

      workRsi[r][z+_changa] =                                         sum/MathMax(k,1);

     }

   else

     {

      double change=workRsi[r][z+_price]-workRsi[r-1][z+_price];

      workRsi[r][z+_change] = workRsi[r-1][z+_change] + alpha*(        change  - workRsi[r-1][z+_change]);

      workRsi[r][z+_changa] = workRsi[r-1][z+_changa] + alpha*(MathAbs(change) - workRsi[r-1][z+_changa]);

     }

   return(50.0*(workRsi[r][z+_change]/MathMax(workRsi[r][z+_changa],DBL_MIN)+1));

  }

//

//---

//

#define _bbStopsInstances     1

#define _bbStopsInstancesSize 6

double bbWork[][_bbStopsInstances*_bbStopsInstancesSize];

#define _bbPrice 0

#define _bbAmax  1

#define _bbAmin  2

#define _bbBmax  3

#define _bbBmin  4

#define _bbTrend 5

//

//---

//

_bbReturnStruct iBbStops(double price,int period,double risk,int deviationPeriod,double deviation, int i,int bars,int instanceNo=0)

  {

   if(ArrayRange(bbWork,0)!=bars) ArrayResize(bbWork,bars); instanceNo*=_bbStopsInstancesSize;



   //

   //---

   //



   bbWork[i][instanceNo+_bbPrice]=price;

      double oldMean   = price;

      double newMean   = price;

      double squares   = 0;

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

      {

         newMean  = (bbWork[i-k][instanceNo+_bbPrice]-oldMean)/(k+1)+oldMean;

         squares += (bbWork[i-k][instanceNo+_bbPrice]-oldMean)*(bbWork[i-k][instanceNo+_bbPrice]-newMean);

         oldMean  = newMean;

      }

      double dev   = MathSqrt(squares/deviationPeriod);

      double ma    = price;

      for(int k=1; k<period && (i-k)>=0; k++) ma+=bbWork[i-k][instanceNo+_bbPrice]; ma/=period;

      bbWork[i][instanceNo+_bbAmax] = ma+dev*deviation;

      bbWork[i][instanceNo+_bbAmin] = ma-dev*deviation;

      bbWork[i][instanceNo+_bbBmax] = bbWork[i][instanceNo+_bbAmax]+0.5*(risk-1)*(bbWork[i][instanceNo+_bbAmax]-bbWork[i][instanceNo+_bbAmin]);

      bbWork[i][instanceNo+_bbBmin]= bbWork[i][instanceNo+_bbAmin]-0.5*(risk-1)*(bbWork[i][instanceNo+_bbAmax]-bbWork[i][instanceNo+_bbAmin]);

      bbWork[i][instanceNo+_bbTrend] =(i>0) ?(price>bbWork[i-1][instanceNo+_bbAmax]) ? 1 :(price<bbWork[i-1][instanceNo+_bbAmin]) ? -1 : bbWork[i-1][instanceNo+_bbTrend] : 0;

      if(i>0)

      {

         if(bbWork[i][instanceNo+_bbTrend]==-1 && bbWork[i][instanceNo+_bbAmax]>bbWork[i-1][instanceNo+_bbAmax]) bbWork[i][instanceNo+_bbAmax] = bbWork[i-1][instanceNo+_bbAmax];

         if(bbWork[i][instanceNo+_bbTrend]== 1 && bbWork[i][instanceNo+_bbAmin]<bbWork[i-1][instanceNo+_bbAmin]) bbWork[i][instanceNo+_bbAmin] = bbWork[i-1][instanceNo+_bbAmin];

         if(bbWork[i][instanceNo+_bbTrend]==-1 && bbWork[i][instanceNo+_bbBmax]>bbWork[i-1][instanceNo+_bbBmax]) bbWork[i][instanceNo+_bbBmax] = bbWork[i-1][instanceNo+_bbBmax];

         if(bbWork[i][instanceNo+_bbTrend]== 1 && bbWork[i][instanceNo+_bbBmin]<bbWork[i-1][instanceNo+_bbBmin]) bbWork[i][instanceNo+_bbBmin] = bbWork[i-1][instanceNo+_bbBmin];

        }

   _bbReturnStruct _result;

                   _result.upValue   = bbWork[i][instanceNo+_bbBmin];

                   _result.downValue = bbWork[i][instanceNo+_bbBmax];

                   _result.trend     = (int)bbWork[i][instanceNo+_bbTrend];

                   _result.trendChange=(i>0) ? (bbWork[i][instanceNo+_bbTrend]!=bbWork[i-1][instanceNo+_bbTrend]) : false;

   return(_result);

  }

//

//---

//

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

  {

   if(i>=0)

      switch(tprice)

        {

         case PRICE_CLOSE:     return(close[i]);

         case PRICE_OPEN:      return(open[i]);

         case PRICE_HIGH:      return(high[i]);

         case PRICE_LOW:       return(low[i]);

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

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

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

        }

   return(0);

  }

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