rangeexpansionindex_htf

//+------------------------------------------------------------------+ 
//|                                      RangeExpansionIndex_HTF.mq5 | 
//|                               Copyright © 2015, Nikolay Kositsin | 
//|                              Khabarovsk,   farria@mail.redcom.ru | 
//+------------------------------------------------------------------+ 
#property copyright "Copyright © 2015, Nikolay Kositsin"
#property link "farria@mail.redcom.ru" 
//--- íîìåð âåðñèè èíäèêàòîðà
#property version   "1.60"
//--- îòðèñîâêà èíäèêàòîðà â îòäåëüíîì îêíå
#property indicator_separate_window 
//--- êîëè÷åñòâî èíäèêàòîðíûõ áóôåðîâ 2
#property indicator_buffers 2 
//--- èñïîëüçîâàíî âñåãî îäíî ãðàôè÷åñêîå ïîñòðîåíèå
#property indicator_plots   1
//+----------------------------------------------+
//| Ïàðàìåòðû îòðèñîâêè èíäèêàòîðà               |
//+----------------------------------------------+
//--- îòðèñîâêà èíäèêàòîðà â âèäå ÷åòûðåõöâåòíîé ãèñòîãðàììû
#property indicator_type1 DRAW_COLOR_HISTOGRAM
//--- â êà÷åñòâå îêðàñêè ãèñòîãðàììû èñïîëüçîâàíî ïÿòü öâåòîâ
#property indicator_color1 clrGray,clrLime,clrBlue,clrRed,clrMagenta
//--- ëèíèÿ èíäèêàòîðà - ñïëîøíàÿ
#property indicator_style1 STYLE_SOLID
//--- òîëùèíà ëèíèè èíäèêàòîðà ðàâíà 5
#property indicator_width1 5
//--- îòîáðàæåíèå ëýéáû èíäèêàòîðà
#property indicator_label1 "RangeExpansionIndex HTF"
//+----------------------------------------------+
//| Ïàðàìåòðû îòîáðàæåíèÿ ãîðèçîíòàëüíûõ óðîâíåé |
//+----------------------------------------------+
#property indicator_level1 +60
#property indicator_level2 -60
#property indicator_levelcolor clrGray
#property indicator_levelstyle STYLE_DASHDOTDOT
//+----------------------------------------------+
//| îáúÿâëåíèå êîíñòàíò                          |
//+----------------------------------------------+
#define RESET 0 // Êîíñòàíòà äëÿ âîçâðàòà òåðìèíàëó êîìàíäû íà ïåðåñ÷åò èíäèêàòîðà
//+----------------------------------------------+
//| Âõîäíûå ïàðàìåòð èíäèêàòîðà                  |
//+----------------------------------------------+
input ENUM_TIMEFRAMES TimeFrame=PERIOD_H4; // Ïåðèîä ãðàôèêà
input uint REI_Period=8;                   // Ïåðèîä óñðåäíåíèÿ
input bool ReDraw=true;                    // Ïîâòîð îòîáðàæåíèÿ èíôîìàöèè íà ïóñòûõ áàðàõ
//+----------------------------------------------+
//--- îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
int min_rates_total;
//--- îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ äëÿ õåíäëîâ èíäèêàòîðîâ
int Ind_Handle;
//--- îáúÿâëåíèå äèíàìè÷åñêèõ ìàññèâîâ, êîòîðûå áóäóò
//--- â äàëüíåéøåì èñïîëüçîâàíû â êà÷åñòâå èíäèêàòîðíûõ áóôåðîâ
double IndBuffer[],ColorBuffer[];
//+------------------------------------------------------------------+
//|  Ïîëó÷åíèå ñòðèíãîâîãî òàéìôðåéìà                                |
//+------------------------------------------------------------------+
string GetStringTimeframe(ENUM_TIMEFRAMES timeframe)
  {
//---
   return(StringSubstr(EnumToString(timeframe),7,-1));
//---
  }
//+------------------------------------------------------------------+    
//| REI indicator initialization function                            | 
//+------------------------------------------------------------------+  
int OnInit()
  {
//--- èíèöèàëèçàöèÿ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
   min_rates_total=3;
//--- ïðîâåðêà ïåðèîäîâ ãðàôèêîâ íà êîððåêòíîñòü
   if(TimeFrame<Period() && TimeFrame!=PERIOD_CURRENT)
     {
      Print("Ïåðèîä ãðàôèêà äëÿ èíäèêàòîðà REI íå ìîæåò áûòü ìåíüøå ïåðèîäà òåêóùåãî ãðàôèêà");
      return(INIT_FAILED);
     }
//--- ïîëó÷åíèå õåíäëà èíäèêàòîðà RangeExpansionIndex
   Ind_Handle=iCustom(Symbol(),TimeFrame,"RangeExpansionIndex",REI_Period);
   if(Ind_Handle==INVALID_HANDLE)
     {
      Print(" Íå óäàëîñü ïîëó÷èòü õåíäë èíäèêàòîðà REI");
      return(INIT_FAILED);
     }
//--- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà IndBuffer â èíäèêàòîðíûé áóôåð
   SetIndexBuffer(0,IndBuffer,INDICATOR_DATA);
//--- îñóùåñòâëåíèå ñäâèãà íà÷àëà îòñ÷åòà îòðèñîâêè èíäèêàòîðà
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);
//--- óñòàíîâêà çíà÷åíèé èíäèêàòîðà, êîòîðûå íå áóäóò âèäèìû íà ãðàôèêå
   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);
//--- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðå êàê â òàéìñåðèè
   ArraySetAsSeries(IndBuffer,true);
//--- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà â öâåòîâîé, èíäåêñíûé áóôåð   
   SetIndexBuffer(1,ColorBuffer,INDICATOR_COLOR_INDEX);
//--- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðå êàê â òàéìñåðèè
   ArraySetAsSeries(ColorBuffer,true);
//--- èíèöèàëèçàöèè ïåðåìåííîé äëÿ êîðîòêîãî èìåíè èíäèêàòîðà
   string shortname;
   StringConcatenate(shortname,"REI HTF( ",GetStringTimeframe(TimeFrame),", ",REI_Period," )");
//--- ñîçäàíèå èìåíè äëÿ îòîáðàæåíèÿ â îòäåëüíîì ïîäîêíå è âî âñïëûâàþùåé ïîäñêàçêå
   IndicatorSetString(INDICATOR_SHORTNAME,shortname);
//--- îïðåäåëåíèå òî÷íîñòè îòîáðàæåíèÿ çíà÷åíèé èíäèêàòîðà
   IndicatorSetInteger(INDICATOR_DIGITS,0);
//--- çàâåðøåíèå èíèöèàëèçàöèè
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+  
//| REI iteration function                                           | 
//+------------------------------------------------------------------+  
int OnCalculate(const int rates_total,    // êîëè÷åñòâî èñòîðèè â áàðàõ íà òåêóùåì òèêå
                const int prev_calculated,// êîëè÷åñòâî èñòîðèè â áàðàõ íà ïðåäûäóùåì òèêå
                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[])
  {
//--- ïðîâåðêà êîëè÷åñòâà áàðîâ íà äîñòàòî÷íîñòü äëÿ ðàñ÷åòà
   if(rates_total<min_rates_total) return(RESET);
   if(BarsCalculated(Ind_Handle)<Bars(Symbol(),TimeFrame)) return(prev_calculated);
//--- îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ
   int limit,bar;
//--- îáúÿâëåíèå ïåðåìåííûõ ñ ïëàâàþùåé òî÷êîé  
   double REI[2];
   datetime REITime[1];
   static uint LastCountBar;
//--- ðàñ÷åòû íåîáõîäèìîãî êîëè÷åñòâà êîïèðóåìûõ äàííûõ è
//--- ñòàðòîâîãî íîìåðà limit äëÿ öèêëà ïåðåñ÷åòà áàðîâ
   if(prev_calculated>rates_total || prev_calculated<=0)// ïðîâåðêà íà ïåðâûé ñòàðò ðàñ÷åòà èíäèêàòîðà
     {
      limit=rates_total-min_rates_total-1; // ñòàðòîâûé íîìåð äëÿ ðàñ÷åòà âñåõ áàðîâ
      LastCountBar=rates_total;
     }
   else limit=int(LastCountBar)+rates_total-prev_calculated; // ñòàðòîâûé íîìåð äëÿ ðàñ÷åòà íîâûõ áàðîâ 
//--- èíäåêñàöèÿ ýëåìåíòîâ â ìàññèâàõ êàê â òàéìñåðèÿõ  
   ArraySetAsSeries(time,true);
//--- îñíîâíîé öèêë ðàñ÷åòà èíäèêàòîðà
   for(bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      //--- îáíóëèì ñîäåðæèìîå èíäèêàòîðíûõ áóôåðîâ äî ðàñ÷åòà
      IndBuffer[bar]=EMPTY_VALUE;
      ColorBuffer[bar]=0;
      //--- êîïèðóåì âíîâü ïîÿâèâøèåñÿ äàííûå â ìàññèâ
      if(CopyTime(Symbol(),TimeFrame,time[bar],1,REITime)<=0) return(RESET);

      if(time[bar]>=REITime[0] && time[bar+1]<REITime[0])
        {
         LastCountBar=bar;
         //--- êîïèðóåì âíîâü ïîÿâèâøèåñÿ äàííûå â ìàññèâû
         if(CopyBuffer(Ind_Handle,0,time[bar],2,REI)<=0) return(RESET);
         //--- çàãðóçêà ïîëó÷åííûõ çíà÷åíèé â èíäèêàòîðíûå áóôåðû
         IndBuffer[bar]=REI[1];
         //--- 
         if(IndBuffer[bar]>50)
           {
            if(REI[1]>REI[0]) ColorBuffer[bar]=1;
            if(REI[1]<REI[0]) ColorBuffer[bar]=2;
           }
         //---
         if(IndBuffer[bar]<50)
           {
            if(REI[1]<REI[0]) ColorBuffer[bar]=3;
            if(REI[1]>REI[0]) ColorBuffer[bar]=4;
           }
        }
      //---
      if(ReDraw)
        {
         if(IndBuffer[bar+1]!=EMPTY_VALUE && IndBuffer[bar]==EMPTY_VALUE)
           {
            IndBuffer[bar]=IndBuffer[bar+1];
            ColorBuffer[bar]=ColorBuffer[bar+1];
           }
        }
     }
//---     
   return(rates_total);
  }
//+------------------------------------------------------------------+