hlr_histogram

//+------------------------------------------------------------------+
//|                                                HLR_Histogram.mq5 |
//|                                      Copyright © 2007, Alexandre |
//|                      http://www.kroufr.ru/content/view/1184/124/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Alexandre"
#property link      "http://www.kroufr.ru/content/view/1184/124/"
#property description "Hi-Lo Range Oscillator"
//---- íîìåð âåðñèè èíäèêàòîðà
#property version   "1.00"
//---- îòðèñîâêà èíäèêàòîðà â îòäåëüíîì îêíå
#property indicator_separate_window 
//---- êîëè÷åñòâî èíäèêàòîðíûõ áóôåðîâ 3
#property indicator_buffers 3 
//---- èñïîëüçîâàíî îäíî ãðàôè÷åñêîå ïîñòðîåíèå
#property indicator_plots   1
//+----------------------------------------------+
//|  Ïàðàìåòðû îòðèñîâêè èíäèêàòîðà              |
//+----------------------------------------------+
//---- îòðèñîâêà èíäèêàòîðà â âèäå ãèñòîãðàììû
#property indicator_type1   DRAW_COLOR_HISTOGRAM2
//---- â êà÷åñòâå öâåòîâ èíäèêàòîðà èñïîëüçîâàíû
#property indicator_color1  clrLime,clrDarkTurquoise,clrMediumPurple,clrDarkOrange,clrMagenta
//---- ëèíèÿ èíäèêàòîðà - ñïëîøíàÿ
#property indicator_style1 STYLE_SOLID
//---- òîëùèíà ëèíèè èíäèêàòîðà ðàâíà 2
#property indicator_width1 2
//---- îòîáðàæåíèå ìåòêè èíäèêàòîðà
#property indicator_label1  "Hi-Lo Range Oscillator"
//+----------------------------------------------+
//|  îáúÿâëåíèå êîíñòàíò                         |
//+----------------------------------------------+
#define RESET 0   // Êîíñòàíòà äëÿ âîçâðàòà òåðìèíàëó êîìàíäû íà ïåðåñ÷åò èíäèêàòîðà
#define MIDLLE 50 // Êîíñòàíòà ñåðèäèíû äèàïîçîíà èíäèêàòîðà èíäèêàòîðà
//+----------------------------------------------+
//|  Âõîäíûå ïàðàìåòðû èíäèêàòîðà                |
//+----------------------------------------------+
input uint HLR_Range=40;         // Ïåðèîä óñðåäíåíèÿ èíäèêàòîðà
input uint HighLevel=80;         // Óðîâåíü ïåðåêóïëåííîñòè
input uint LowLevel=20;          // Óðîâåíü ïåðåïðîäàííîñòè
input int  Shift=0;              // Ñäâèã èíäèêàòîðà ïî ãîðèçîíòàëè â áàðàõ
//+----------------------------------------------+
//---- îáúÿâëåíèå äèíàìè÷åñêèõ ìàññèâîâ, êîòîðûå áóäóò â 
// äàëüíåéøåì èñïîëüçîâàíû â êà÷åñòâå èíäèêàòîðíûõ áóôåðîâ
double UpBuffer[],DnBuffer[],ColorBuffer[];
//---- Îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
int min_rates_total;
//+------------------------------------------------------------------+   
//| HLR indicator initialization function                            | 
//+------------------------------------------------------------------+ 
void OnInit()
  {
//---- Èíèöèàëèçàöèÿ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
   min_rates_total=int(HLR_Range+1);
//---- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà â èíäèêàòîðíûé áóôåð
   SetIndexBuffer(0,UpBuffer,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);
//---- îñóùåñòâëåíèå ñäâèãà èíäèêàòîðà ïî ãîðèçîíòàëè íà InpKijun
   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);
//---- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðå êàê â òàéìñåðèè
   ArraySetAsSeries(UpBuffer,true);
//---- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà â èíäèêàòîðíûé áóôåð
   SetIndexBuffer(1,DnBuffer,INDICATOR_DATA);
//---- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðå êàê â òàéìñåðèè
   ArraySetAsSeries(DnBuffer,true);
//---- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà â öâåòîâîé, èíäåêñíûé áóôåð   
   SetIndexBuffer(2,ColorBuffer,INDICATOR_COLOR_INDEX);
//---- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðå êàê â òàéìñåðèè
   ArraySetAsSeries(ColorBuffer,true);
//---- èíèöèàëèçàöèè ïåðåìåííîé äëÿ êîðîòêîãî èìåíè èíäèêàòîðà
   string shortname;
   StringConcatenate(shortname,"Hi-Lo Range Oscillator Histogram(",HLR_Range,", ",Shift,")");
//--- 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);
//---- êîëè÷åñòâî  ãîðèçîíòàëüíûõ óðîâíåé èíäèêàòîðà 3   
   IndicatorSetInteger(INDICATOR_LEVELS,3);
//---- çíà÷åíèÿ ãîðèçîíòàëüíûõ óðîâíåé èíäèêàòîðà   
   IndicatorSetDouble(INDICATOR_LEVELVALUE,0,HighLevel);
   IndicatorSetDouble(INDICATOR_LEVELVALUE,1,MIDLLE);
   IndicatorSetDouble(INDICATOR_LEVELVALUE,2,LowLevel);
//---- â êà÷åñòâå öâåòîâ ëèíèé ãîðèçîíòàëüíûõ óðîâíåé èñïîëüçîâàíû
   IndicatorSetInteger(INDICATOR_LEVELCOLOR,0,clrBlue);
   IndicatorSetInteger(INDICATOR_LEVELCOLOR,1,clrGray);
   IndicatorSetInteger(INDICATOR_LEVELCOLOR,2,clrMagenta);
//---- â ëèíèè ãîðèçîíòàëüíîãî óðîâíÿ èñïîëüçîâàí êîðîòêèé øòðèõ-ïóíêòèð  
   IndicatorSetInteger(INDICATOR_LEVELSTYLE,0,STYLE_DASHDOTDOT);
   IndicatorSetInteger(INDICATOR_LEVELSTYLE,1,STYLE_DASHDOTDOT);
   IndicatorSetInteger(INDICATOR_LEVELSTYLE,2,STYLE_DASHDOTDOT);
//---- çàâåðøåíèå èíèöèàëèçàöèè
  }
//+------------------------------------------------------------------+ 
//| HLR 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);
//---- Îáúÿâëåíèå ïåðåìåííûõ ñ ïëàâàþùåé òî÷êîé  
   double m_pr,HH,LL,HL,res;
//---- Îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ è ïîëó÷åíèå óæå ïîñ÷èòàííûõ áàðîâ
   int limit,bar,trend;
   static int trend_prev;
//---- 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
      trend_prev=0;
     }
   else limit=rates_total-prev_calculated; // ñòàðòîâûé íîìåð äëÿ ðàñ÷åòà íîâûõ áàðîâ
//---- èíäåêñàöèÿ ýëåìåíòîâ â ìàññèâàõ, êàê â òàéìñåðèÿõ  
   ArraySetAsSeries(high,true);
   ArraySetAsSeries(low,true);
//---- ïåðåñ÷åò çíà÷åíèé èíäèêàòîðîâ
   for(bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      HH=high[ArrayMaximum(high,bar,HLR_Range)];
      LL=low [ArrayMinimum(low, bar,HLR_Range)];
      m_pr=(high[bar]+low[bar])/2.0;
      HL=HH-LL;
      if(HL) res=100.0*(m_pr-LL)/(HL);
      else res=MIDLLE;
      UpBuffer[bar]=res;
      DnBuffer[bar]=MIDLLE;
      int clr=2;
      trend=trend_prev;
      if(res>HighLevel)
        {
         if(trend_prev<0) clr=0;
         else clr=1;
         trend=+1;
        }
      else if(res<LowLevel)
        {
         if(trend_prev>0) clr=4;
         else clr=3;
         trend=-1;
        }
      ColorBuffer[bar]=clr;
      if(bar && trend) trend_prev=trend;
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+