POB

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

//|                                                          POB.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 description "Point of Balance"

#property indicator_chart_window

#property indicator_buffers 3

#property indicator_plots   3

//--- plot BL

#property indicator_label1  "BL (Up)"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrRed

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot POB

#property indicator_label2  "POB"

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrBlue

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- plot BR

#property indicator_label3  "BR (Down)"

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrGreen

#property indicator_style3  STYLE_SOLID

#property indicator_width3  1

//--- input parameters

input uint     InpPeriod   =  14;   // Period

//--- indicator buffers

double         BufferBL[];

double         BufferPOB[];

double         BufferBR[];

//--- global variables

int            period;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- set global variables

   period=int(InpPeriod<1 ? 1 : InpPeriod);

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferBL,INDICATOR_DATA);

   SetIndexBuffer(1,BufferPOB,INDICATOR_DATA);

   SetIndexBuffer(2,BufferBR,INDICATOR_DATA);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"POB("+(string)period+")");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferBL,true);

   ArraySetAsSeries(BufferPOB,true);

   ArraySetAsSeries(BufferBR,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<period) return 0;

//--- #AB0=>2:0 <0AA82>2 1CD5@>2 :0: B09<A5@89

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

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

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-period-1;

      ArrayInitialize(BufferBL,EMPTY_VALUE);

      ArrayInitialize(BufferPOB,EMPTY_VALUE);

      ArrayInitialize(BufferBR,EMPTY_VALUE);

     }

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

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

     {

      int highest_h=Highest(NULL,PERIOD_CURRENT,PRICE_HIGH,period,i);

      int highest_l=Highest(NULL,PERIOD_CURRENT,PRICE_LOW,period,i);

      int lowest_h=Lowest(NULL,PERIOD_CURRENT,PRICE_HIGH,period,i);

      int lowest_l=Lowest(NULL,PERIOD_CURRENT,PRICE_LOW,period,i);

      if(highest_h==WRONG_VALUE || highest_l==WRONG_VALUE || lowest_h==WRONG_VALUE || lowest_l==WRONG_VALUE)

         return 0;

      double MinH=high[lowest_h];

      double MaxH=high[highest_h];

      double MinL=low[lowest_l];

      double MaxL=low[highest_l];

      BufferBL[i]=(MinH+MaxH)/2;

      BufferBR[i]=(MinL+MaxL)/2;

      BufferPOB[i]=(BufferBL[i]+BufferBR[i])/2;

     }



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

   return(rates_total);

  }

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

//| >72@0I05B 8=45:A <0:A8<0;L=>3> 7=0G5=8O B09<A5@88               |

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

int Highest(string symbol_name,const ENUM_TIMEFRAMES timeframe,const ENUM_APPLIED_PRICE price_type,const int count,const int start)

  {

   if(symbol_name=="" || symbol_name==NULL) symbol_name=Symbol();

   double array[];

   ArraySetAsSeries(array,true);

   switch(price_type)

     {

      case PRICE_CLOSE :

         if(CopyClose(symbol_name,timeframe,start,count,array)==count)

            return ArrayMaximum(array)+start;

         return WRONG_VALUE;

      case PRICE_OPEN :

         if(CopyOpen(symbol_name,timeframe,start,count,array)==count)

            return ArrayMaximum(array)+start;

         return WRONG_VALUE;

      case PRICE_HIGH :

         if(CopyHigh(symbol_name,timeframe,start,count,array)==count)

            return ArrayMaximum(array)+start;

         return WRONG_VALUE;

      case PRICE_LOW :

         if(CopyLow(symbol_name,timeframe,start,count,array)==count)

            return ArrayMaximum(array)+start;

         return WRONG_VALUE;

      default:

         return WRONG_VALUE;

     }

   return WRONG_VALUE;

  }

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

//| >72@0I05B 8=45:A <8=8<0;L=>3> 7=0G5=8O B09<A5@88                |

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

int Lowest(string symbol_name,const ENUM_TIMEFRAMES timeframe,const ENUM_APPLIED_PRICE price_type,const int count,const int start)

  {

   if(symbol_name=="" || symbol_name==NULL) symbol_name=Symbol();

   double array[];

   ArraySetAsSeries(array,true);

   switch(price_type)

     {

      case PRICE_CLOSE :

         if(CopyClose(symbol_name,timeframe,start,count,array)==count)

            return ArrayMinimum(array)+start;

         return WRONG_VALUE;

      case PRICE_OPEN :

         if(CopyOpen(symbol_name,timeframe,start,count,array)==count)

            return ArrayMinimum(array)+start;

         return WRONG_VALUE;

      case PRICE_HIGH :

         if(CopyHigh(symbol_name,timeframe,start,count,array)==count)

            return ArrayMinimum(array)+start;

         return WRONG_VALUE;

      case PRICE_LOW :

         if(CopyLow(symbol_name,timeframe,start,count,array)==count)

            return ArrayMinimum(array)+start;

         return WRONG_VALUE;

      default:

         return WRONG_VALUE;

     }

   return WRONG_VALUE;

  }

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