AD

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

//|                                                           AD.mq5 |

//|                        Copyright 2018, MetaQuotes Software Corp. |

//|                                                 https://mql5.com |

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

#property copyright "Copyright 2018, MetaQuotes Software Corp."

#property link      "https://mql5.com"

#property version   "1.00"

#property indicator_separate_window

#property indicator_buffers 2

#property indicator_plots   1

//--- plot AD

#property indicator_label1  "AD"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrGreen

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- enums

enum ENUM_METHOD

  {

   METHOD_CLASSIC,   // Classical

   METHOD_INC,       // Classical Incremental

   METHOD_TS_INC     // Trade Station Incremental

  };

//--- input parameters

input ENUM_METHOD InpMethod   =  METHOD_CLASSIC;   // AD calculation method

//--- indicator buffers

double         BufferAD[];

double         BufferCurent[];

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferAD,INDICATOR_DATA);

   SetIndexBuffer(1,BufferCurent,INDICATOR_CALCULATIONS);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"AD");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferAD,true);

   ArraySetAsSeries(BufferCurent,true);

//---

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              |

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

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[])

  {

//--- @>25@:0 =0 <8=8<0;L=>5 :>;85AB2> 10@>2 4;O @0AGQB0

   if(rates_total<1) return 0;

//--- #AB0=>2:0 8=45:A0F88 <0AA82>2 :0: B09<A5@89

   ArraySetAsSeries(open,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(close,true);

   ArraySetAsSeries(tick_volume,true);

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   int limit=rates_total-prev_calculated;

   int limit2=limit;

   if(limit>1)

     {

      limit=rates_total-1;

      limit2=limit-1;

      ArrayInitialize(BufferAD,0);

      ArrayInitialize(BufferCurent,0);

     }

//--- >43>B>2:0 40==KE

   for(int i=limit; i>=0 && !IsStopped(); i--)

     {

      BufferCurent[i]=

        (

         high[i]-low[i]!=0 ?

         InpMethod==METHOD_TS_INC ?

         ((close[i]-open[i])/(high[i]-low[i]))*tick_volume[i] :

         (((close[i]-low[i]) -(high[i]-close[i]))/(high[i]-low[i]))*tick_volume[i] : 0

        );

     }

//---  0AGQB 8=48:0B>@0

   for(int i=limit2; i>=0 && !IsStopped(); i--)

      BufferAD[i]=(InpMethod==METHOD_CLASSIC ? BufferCurent[i] : BufferAD[i+1]+BufferCurent[i]);

//--- return value of prev_calculated for next call

   return(rates_total);

  }

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