wpr_v1

//+------------------------------------------------------------------+
//|                                                          WPR.mq5 |
//|                                       Copyright © 2005, Dark Han |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
//---- àâòîðñòâî èíäèêàòîðà
#property copyright "Copyright © 2005, Dark Han"
//---- ññûëêà íà ñàéò àâòîðà
#property link      "http://www.metaquotes.net/"
#property description "Williams’ Percent Range"
//---- íîìåð âåðñèè èíäèêàòîðà
#property version   "1.00"
//---- îòðèñîâêà èíäèêàòîðà â îòäåëüíîì îêíå
#property indicator_separate_window
//---- êîëè÷åñòâî èíäèêàòîðíûõ áóôåðîâ 1
#property indicator_buffers 1 
//---- èñïîëüçîâàíî âñåãî îäíî ãðàôè÷åñêèå ïîñòðîåíèå
#property indicator_plots   1
//---- îãðàíè÷åíèÿ ìàñøòàáà ðàçìåðîâ îêíà èíäèêàòîðà ïî âåðòèêàëè
#property indicator_maximum 0
#property indicator_minimum -100
//+----------------------------------------------+
//| Ïàðàìåòðû îòðèñîâêè èíäèêàòîðà               |
//+----------------------------------------------+
//---- îòðèñîâêà èíäèêàòîðà â âèäå ëèíèè
#property indicator_type1 DRAW_LINE
//---- â êà÷åñòâå öâåòà ëèíèè èñïîëüçîâàí MediumOrchid öâåò
#property indicator_color1 clrMediumOrchid
//---- ëèíèÿ èíäèêàòîðà - ñïëîøíàÿ
#property indicator_style1 STYLE_SOLID
//---- òîëùèíà ëèíèè èíäèêàòîðà ðàâíà 2
#property indicator_width1 2
//---- îòîáðàæåíèå ìåòêè ñèãíàëüíîé ëèíèè
#property indicator_label1  "WPR"
//+----------------------------------------------+
//| Ïàðàìåòðû îòîáðàæåíèÿ ãîðèçîíòàëüíûõ óðîâíåé |
//+----------------------------------------------+
#property indicator_level1 -30
#property indicator_level2 -70
#property indicator_levelcolor clrGray
#property indicator_levelstyle STYLE_DASHDOTDOT
//+----------------------------------------------+
//| Îáúÿâëåíèå ïåðå÷èñëåíèé                      |
//+----------------------------------------------+
enum ENUM_APPLIED_PRICE_ //Òèï êîíñòàíòû
  {
   PRICE_CLOSE_ = 1,     //PRICE_CLOSE
   PRICE_HIGH_,          //PRICE_HIGH
   PRICE_LOW_            //PRICE_LOW
  };
//+----------------------------------------------+
//| Îáúÿâëåíèå êîíñòàíò                          |
//+----------------------------------------------+
#define RESET  0 // êîíñòàíòà äëÿ âîçâðàòà òåðìèíàëó êîìàíäû íà ïåðåñ÷åò èíäèêàòîðà
//+----------------------------------------------+
//| Âõîäíûå ïàðàìåòðû èíäèêàòîðà                 |
//+----------------------------------------------+
input uint ExtWPRPeriod=11;                       // Ïåðèîä óñðåäíåíèÿ
input ENUM_APPLIED_PRICE_ IPC=PRICE_CLOSE_;       // Öåíîâàÿ êîíñòàíòà
input int Shift = 0;                              // Ñäâèã èíäèêàòîðà ïî ãîðèçîíòàëè â áàðàõ
//+----------------------------------------------+
//---- îáúÿâëåíèå äèíàìè÷åñêîãî ìàññèâà, êîòîðûé áóäåò â 
//---- äàëüíåéøåì èñïîëüçîâàí â êà÷åñòâå èíäèêàòîðíîãî áóôåðà
double ExtLineBuffer[];
//---- îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
int min_rates_total;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+  
void OnInit()
  {
//---- èíèöèàëèçàöèÿ ïåðåìåííûõ íà÷àëà îòñ÷åòà äàííûõ
   min_rates_total=int(ExtWPRPeriod);
//---- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà ExtLineBuffer â èíäèêàòîðíûé áóôåð
   SetIndexBuffer(0,ExtLineBuffer,INDICATOR_DATA);
//---- èíèöèàëèçàöèÿ ïåðåìåííîé äëÿ êîðîòêîãî èìåíè èíäèêàòîðà
   string shortname;
   StringConcatenate(shortname,"WPR(",ExtWPRPeriod," ",EnumToString(IPC),")");
//---- îñóùåñòâëåíèå ñäâèãà èíäèêàòîðà 1 ïî ãîðèçîíòàëè íà ATRShift
   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);
//---- ñîçäàíèå èìåíè äëÿ îòîáðàæåíèÿ â îòäåëüíîì ïîäîêíå è âî âñïëûâàþùåé ïîäñêàçêå
   IndicatorSetString(INDICATOR_SHORTNAME,shortname);
//---- çàïðåò íà îòðèñîâêó èíäèêàòîðîì ïóñòûõ çíà÷åíèé
   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);
//---- îñóùåñòâëåíèå ñäâèãà íà÷àëà îòñ÷åòà îòðèñîâêè èíäèêàòîðà
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);
//---- èíäåêñàöèÿ ýëåìåíòîâ â áóôåðàõ êàê â òàéìñåðèÿõ   
   ArraySetAsSeries(ExtLineBuffer,true);
//---- îïðåäåëåíèå òî÷íîñòè îòîáðàæåíèÿ çíà÷åíèé èíäèêàòîðà
   IndicatorSetInteger(INDICATOR_DIGITS,0);
  }
//+------------------------------------------------------------------+
//| Custom indicator 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[],     // öåíîâîé ìàññèâ ìàêñèìóìîâ öåíû äëÿ ðàñ÷åòà èíäèêàòîðà
                const double& low[],      // öåíîâîé ìàññèâ ìèíèìóìîâ öåíû  äëÿ ðàñ÷åòà èíäèêàòîðà
                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 ëîêàëüíûõ ïåðåìåííûõ 
   int limit,bar;
   double range,HH,LL;
//---- 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-1; // ñòàðòîâûé íîìåð äëÿ ðàñ÷åòà âñåõ áàðîâ
     }
   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);
   ArraySetAsSeries(close,true);
//---- îñíîâíîé öèêë ðàñ÷åòà èíäèêàòîðà
   for(bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      ExtLineBuffer[bar]=50;
      HH=high[ArrayMaximum(high,bar,ExtWPRPeriod)];
      LL=low[ArrayMinimum(low,bar,ExtWPRPeriod)];
      range=HH-LL;
//----
      if(!CompareDouble(range,0.0))
         switch(IPC)
           {
            case PRICE_CLOSE_ :
              {
               ExtLineBuffer[bar]=-100*(HH-close[bar])/range;
               break;
              }
            case PRICE_HIGH_ :
              {
               ExtLineBuffer[bar]=-100*(HH-high[bar])/range;
               break;
              }
            case PRICE_LOW_ :
              {
               ExtLineBuffer[bar]=-100*(HH-low[bar])/range;
               break;
              }
           }
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+
//| Ôóíêöèÿ ñðàâíåíèÿ äâóõ âåùåñòâåííûõ ÷èñåë                        |
//+------------------------------------------------------------------+
bool CompareDouble(double Number1,double Number2)
  {
//----
   bool Compare=NormalizeDouble(Number1-Number2,8)==0;
//----
   return(Compare);
  }
//+------------------------------------------------------------------+