ForceTrend

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

//|                                                      ForceTrend.mq5 | 

//|                                                                     | 

//|                                                                     |

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

#property copyright ""

#property link ""

//---- =><5@ 25@A88 8=48:0B>@0

#property version   "1.00"

//---- >B@8A>2:0 8=48:0B>@0 2 >B45;L=>< >:=5

#property indicator_separate_window

//---- :>;8G5AB2> 8=48:0B>@=KE 1CD5@>2

#property indicator_buffers 2 

//---- 8A?>;L7>20=> 2A53> >4=> 3@0D8G5A:>5 ?>AB@>5=85

#property indicator_plots   1

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

//|  0@0<5B@K >B@8A>2:8 8=48:0B>@0   |

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

//---- >B@8A>2:0 8=48:0B>@0 2 2845 <=>3>F25B=>9 38AB>3@0<<K

#property indicator_type1   DRAW_COLOR_HISTOGRAM

//---- 2 :0G5AB25 F25B>2 B@5EF25B=>9 38AB>3@0<<K 8A?>;L7>20=K

#property indicator_color1  clrDodgerBlue,clrMagenta

//---- 38AB>3@0<<K 8=48:0B>@0 - =5?@5@K2=0O :@820O

#property indicator_style1  STYLE_SOLID

//---- B>;I8=0 ;8=88 8=48:0B>@0 @02=0 2

#property indicator_width1  2

//---- >B>1@065=85 <5B:8 8=48:0B>@0

#property indicator_label1  "ForceTrend"

//---- D8:A8@>20==0O 2KA>B0 ?>4>:=0 8=48:0B>@0 2 ?8:A5;OE 

#property indicator_height 15

//---- =86=55 8 25@E=55 >3@0=8G5=8O H:0;K >B45;L=>3> >:=0 8=48:0B>@0

#property indicator_maximum +1.1

#property indicator_minimum +0.0

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

//|  %+  " + "      |

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

input uint Length=13; //5@8>4 4;O ?>8A:0 M:AB@5<C<>2                   

input int Shift=0; // !4283 8=48:0B>@0 ?> 3>@87>=B0;8 2 10@0E

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



//---- >1JO2;5=85 48=0<8G5A:8E <0AA82>2, :>B>@K5 1C4CB 2 40;L=59H5< 8A?>;L7>20=K 2 :0G5AB25 8=48:0B>@=KE 1CD5@>2

double IndBuffer[];

double ColorIndBuffer[];

//---- 1JO2;5=85 F5;KE ?5@5<5==KE =0G0;0 >BAG5B0 40==KE

int min_rates_total,min_rates_1;

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

//| Bears indicator initialization function                          | 

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

void OnInit()

  {

//---- =8F80;870F8O ?5@5<5==KE =0G0;0 >BAG5B0 40==KE

   min_rates_total=int(Length)+1;   

//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 8=48:0B>@=K9 1CD5@

   SetIndexBuffer(0,IndBuffer,INDICATOR_DATA);

//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 F25B>2>9, 8=45:A=K9 1CD5@   

   SetIndexBuffer(1,ColorIndBuffer,INDICATOR_COLOR_INDEX);  

//---- >ACI5AB2;5=85 A42830 8=48:0B>@0 1 ?> 3>@87>=B0;8

   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAG5B0 >B@8A>2:8 8=48:0B>@0

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//---- CAB0=>2:0 7=0G5=89 8=48:0B>@0, :>B>@K5 =5 1C4CB 2848<K =0 3@0D8:5

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);     

//---- 8=8F80;870F88 ?5@5<5==>9 4;O :>@>B:>3> 8<5=8 8=48:0B>@0

   string shortname;

   StringConcatenate(shortname,"ForceTrend(",Length,", ",Shift,")");

//---- A>740=85 8<5=8 4;O >B>1@065=8O 2 >B45;L=>< ?>4>:=5 8 2> 2A?;K20NI59 ?>4A:07:5

   IndicatorSetString(INDICATOR_SHORTNAME,shortname);

   

//---- >?@545;5=85 B>G=>AB8 >B>1@065=8O 7=0G5=89 8=48:0B>@0

   IndicatorSetInteger(INDICATOR_DIGITS,0);

//---- 7025@H5=85 8=8F80;870F88

  }

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

//| Bears iteration function                                         | 

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

int OnCalculate(const int rates_total,    // :>;8G5AB2> 8AB>@88 2 10@0E =0 B5:CI5< B8:5

                const int prev_calculated,// :>;8G5AB2> 8AB>@88 2 10@0E =0 ?@54K4CI5< B8:5

                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[])

  {

//---- ?@>25@:0 :>;8G5AB20 10@>2 =0 4>AB0B>G=>ABL 4;O @0AG5B0

   if(rates_total<min_rates_total) return(0);



//---- 1JO2;5=85 F5;KE ?5@5<5==KE 8 ?>;CG5=85 C65 ?>AG8B0==KE 10@>2

   int first,bar;

   double Ind,Force1;

   static double Ind_prev,Force1_prev; 

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);



//---- @0AG5B AB0@B>2>3> =><5@0 first 4;O F8:;0 ?5@5AG5B0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0) // ?@>25@:0 =0 ?5@2K9 AB0@B @0AG5B0 8=48:0B>@0

      {

      first=min_rates_total; // AB0@B>2K9 =><5@ 4;O @0AG5B0 2A5E 10@>2

      Ind_prev=NULL;

      Force1_prev=NULL;

      }

   else first=prev_calculated-1; // AB0@B>2K9 =><5@ 4;O @0AG5B0 =>2KE 10@>2



//---- A=>2=>9 F8:; @0AG5B0 8=48:0B>@0

   for(bar=first; bar<rates_total && !IsStopped(); bar++)

     {

      int barx=rates_total-1-bar;

      double high1=high[ArrayMaximum(high,barx,Length)];

      double low1=low[ArrayMinimum(low,barx,Length)];

      double Avrg = (high[barx] + low[barx]) / 2.0;

      double Res=high1 - low1;

      if (Res) Force1 = 0.66 * ((Avrg - low1) / Res - 0.5) + 0.67 * Force1_prev;

      else Force1 = 0.67 * Force1_prev + (-0.33);

      Force1 = MathMin(MathMax(Force1, -0.999), 0.999);

      Res=1 - Force1;

      if (Res) Ind = MathLog((Force1 + 1.0) / Res) / 2.0 + Ind_prev / 2.0;

      else Ind = Ind_prev / 2.0 + 0.5;

      IndBuffer[bar]=1.0;

      //----

      if(Ind<0) ColorIndBuffer[bar]=1;

      else if(Ind>0) ColorIndBuffer[bar]=0;

      else ColorIndBuffer[bar]=ColorIndBuffer[bar-1];

      //----    

      if(bar<rates_total-1)

        {

         Force1_prev = Force1;

         Ind_prev=Ind;  

        }    

     }

//----     

   return(rates_total);

  }

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