MFI_price

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

//|                                                    MFI_price.mq5 | 

//|                                      Copyright © 2011, Paladin80 | 

//|                                                  forevex@mail.ru | 

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

#property copyright "Copyright © 2011, Paladin80"

#property link "forevex@mail.ru"

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

#property version   "1.10"

//---- >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 1 

//---- 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 ;8=88

#property indicator_type1   DRAW_LINE

//---- 2 :0G5AB25 F25B0 ;8=88 8=48:0B>@0 8A?>;L7>20= DodgerBlue F25B

#property indicator_color1 clrDodgerBlue

//---- ;8=8O 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 1

#property indicator_width1  1

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

#property indicator_label1  "MFI_price"

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

//| 0@0<5B@K >B>1@065=8O 3>@87>=B0;L=KE C@>2=59 |

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

#property indicator_level1 70.0

#property indicator_level2 50.0

#property indicator_level3 30.0

#property indicator_levelcolor clrGray

#property indicator_levelstyle STYLE_DASHDOTDOT

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

//|  >1JO2;5=85 ?5@5G8A;5=89                     |

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

enum Applied_price_ //"8? :>=AB0=BK

  {

   PRICE_CLOSE_ = 1,     //Close

   PRICE_OPEN_,          //Open

   PRICE_HIGH_,          //High

   PRICE_LOW_,           //Low

   PRICE_MEDIAN_,        //Median Price (HL/2)

   PRICE_TYPICAL_,       //Typical Price (HLC/3)

   PRICE_WEIGHTED_,      //Weighted Close (HLCC/4)

   PRICE_SIMPL_,         //Simpl Price (OC/2)

   PRICE_QUARTER_,       //Quarted Price (HLOC/4) 

   PRICE_TRENDFOLLOW0_,  //TrendFollow_1 Price 

   PRICE_TRENDFOLLOW1_,  //TrendFollow_2 Price

   PRICE_DEMARK_         //Demark Price

  };

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

//|  %+  " + "                 |

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

input uint ExtMFIPeriod=14;                        // ?5@8>4 MFI

input Applied_price_ IPC=PRICE_TYPICAL_;           // F5=>20O :>=AB0=B0

input ENUM_APPLIED_VOLUME VolumeType=VOLUME_TICK;  // >1JQ< 

input int Shift=0;                                 // A4283 8=48:0B>@0 ?> 3>@87>=B0;8 2 10@0E

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



//---- >1JO2;5=85 48=0<8G5A:>3> <0AA820, :>B>@K9 1C45B 2 

// 40;L=59H5< 8A?>;L7>20= 2 :0G5AB25 8=48:0B>@=>3> 1CD5@0

double IndBuffer[];

//---- 1JO2;5=85 F5;KE ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

int min_rates_total;

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

//| MFI_price indicator initialization function                      | 

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

void OnInit()

  {

//---- =8F80;870F8O ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

   min_rates_total=int(ExtMFIPeriod+1);



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

   SetIndexBuffer(0,IndBuffer,INDICATOR_DATA);

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

   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAGQB0 >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,0);



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

   string shortname;

   StringConcatenate(shortname,"MFI_price(",ExtMFIPeriod,", ",EnumToString(IPC),", ",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

  }

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

//| MFI_price 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 @0AGQB0

   if(rates_total<min_rates_total) return(0);



//---- 1JO2;5=85 ?5@5<5==KE A ?;020NI59 B>G:>9  

   double dPositiveMF,dNegativeMF,dPreviousTP,dCurrentTP;

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

   int first,bar;

   long Vol;



//---- @0AGQB AB0@B>2>3> =><5@0 first 4;O F8:;0 ?5@5AGQB0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0) // ?@>25@:0 =0 ?5@2K9 AB0@B @0AGQB0 8=48:0B>@0

      first=min_rates_total-1; // AB0@B>2K9 =><5@ 4;O @0AGQB0 2A5E 10@>2

   else first=prev_calculated-1; // AB0@B>2K9 =><5@ 4;O @0AGQB0 =>2KE 10@>2



//---- A=>2=>9 F8:; @0AGQB0 8=48:0B>@0

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

     {

      dPositiveMF=0.0;

      dNegativeMF=0.0;

      dCurrentTP=PriceSeries(IPC,bar,open,low,high,close);



      for(int kkk=0; kkk<int(ExtMFIPeriod); kkk++)

        {

         dPreviousTP=PriceSeries(IPC,bar-kkk-1,open,low,high,close);

         

         if(VolumeType==VOLUME_TICK) Vol=long(tick_volume[bar-kkk]);

         else Vol=long(volume[bar-kkk]);

         

         if(dCurrentTP>dPreviousTP) dPositiveMF+=Vol*dCurrentTP;

         else

           {

            if(dCurrentTP<dPreviousTP) dNegativeMF+=Vol*dCurrentTP;

           }

         dCurrentTP=dPreviousTP;

        }



      if(dNegativeMF) IndBuffer[bar]=100-100/(1+dPositiveMF/dNegativeMF);

      else IndBuffer[bar]=100;

     }

//----     

   return(rates_total);

  }

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

//| >;CG5=85 7=0G5=8O F5=>2>9 B09<A5@88                             |

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

double PriceSeries

(

 uint applied_price,// &5=>20O :>=AB0=B0

 uint   bar,// =45:A A42830 >B=>A8B5;L=> B5:CI53> 10@0 =0 C:070==>5 :>;8G5AB2> ?5@8>4>2 =0704 8;8 2?5@Q4).

 const double &Open[],

 const double &Low[],

 const double &High[],

 const double &Close[]

 )

//PriceSeries(applied_price, bar, open, low, high, close)

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

  {

//----

   switch(applied_price)

     {

      //---- &5=>2K5 :>=AB0=BK 87 ?5@5G8A;5=8O ENUM_APPLIED_PRICE

      case  PRICE_CLOSE: return(Close[bar]);

      case  PRICE_OPEN: return(Open [bar]);

      case  PRICE_HIGH: return(High [bar]);

      case  PRICE_LOW: return(Low[bar]);

      case  PRICE_MEDIAN: return((High[bar]+Low[bar])/2.0);

      case  PRICE_TYPICAL: return((Close[bar]+High[bar]+Low[bar])/3.0);

      case  PRICE_WEIGHTED: return((2*Close[bar]+High[bar]+Low[bar])/4.0);



      //----                            

      case  8: return((Open[bar] + Close[bar])/2.0);

      case  9: return((Open[bar] + Close[bar] + High[bar] + Low[bar])/4.0);

      //----                                

      case 10:

        {

         if(Close[bar]>Open[bar])return(High[bar]);

         else

           {

            if(Close[bar]<Open[bar])

               return(Low[bar]);

            else return(Close[bar]);

           }

        }

      //----         

      case 11:

        {

         if(Close[bar]>Open[bar])return((High[bar]+Close[bar])/2.0);

         else

           {

            if(Close[bar]<Open[bar])

               return((Low[bar]+Close[bar])/2.0);

            else return(Close[bar]);

           }

         break;

        }

      //----         

      case 12:

        {

         double res=High[bar]+Low[bar]+Close[bar];



         if(Close[bar]<Open[bar]) res=(res+Low[bar])/2;

         if(Close[bar]>Open[bar]) res=(res+High[bar])/2;

         if(Close[bar]==Open[bar]) res=(res+Close[bar])/2;

         return(((res-Low[bar])+(res-High[bar]))/2);

        }

      //----

      default: return(Close[bar]);

     }

//----

//return(0);

  }

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