i-spectranalysis

//+------------------------------------------------------------------+
//|                                             i-SpectrAnalysis.mq5 |
//|                                           Copyright © 2006, klot |
//|                                                     klot@mail.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, klot"
#property link      "klot@mail.ru"
//--- íîìåð âåðñèè èíäèêàòîðà
#property version   "1.00"
//--- îòðèñîâêà èíäèêàòîðà â ãëàâíîì îêíå
#property indicator_chart_window 
//--- êîëè÷åñòâî èíäèêàòîðíûõ áóôåðîâ
#property indicator_buffers 1 
//--- èñïîëüçîâàíî âñåãî îäíî ãðàôè÷åñêîå ïîñòðîåíèå
#property indicator_plots   1
//+-----------------------------------+
//| Ïàðàìåòðû îòðèñîâêè èíäèêàòîðà    |
//+-----------------------------------+
//--- îòðèñîâêà èíäèêàòîðà â âèäå ëèíèè
#property indicator_type1   DRAW_LINE
//--- â êà÷åñòâå öâåòà ëèíèè èíäèêàòîðà èñïîëüçîâàí Red öâåò
#property indicator_color1 clrRed
//--- ëèíèÿ èíäèêàòîðà - íåïðåðûâíàÿ êðèâàÿ
#property indicator_style1  STYLE_SOLID
//--- òîëùèíà ëèíèè èíäèêàòîðà ðàâíà 2
#property indicator_width1  2
//--- îòîáðàæåíèå ìåòêè èíäèêàòîðà
#property indicator_label1  "i_SpecktrAnalis"
//+-----------------------------------+
//| Îïèñàíèå áèáëèîòåêè dt_FFT.mqh    |
//+-----------------------------------+
#include <dt_FFT.mqh> 
//+-----------------------------------+
//| Âõîäíûå ïàðàìåòðû èíäèêàòîðà      |
//+-----------------------------------+
input uint N = 7;   // Äëèíà ðÿäà
input uint SS = 20; // Êîýôôèöèåíò ñãëàæèâàíèÿ
input int Shift=0;  // Ñäâèã èíäèêàòîðà ïî ãîðèçîíòàëè â áàðàõ
//+-----------------------------------+
//--- îáúÿâëåíèå äèíàìè÷åñêîãî ìàññèâà, êîòîðûé â äàëüíåéøåì
//--- áóäåò èñïîëüçîâàí â êà÷åñòâå èíäèêàòîðíîãî áóôåðà
double IndBuffer[];
//---
int M,tnn1,ss;
//---
double aa[];
//--- îáúÿâëåíèå öåëî÷èñëåííûõ ïåðåìåííûõ íà÷àëà îòñ÷¸òà äàííûõ
int min_rates_total;
//+------------------------------------------------------------------+   
//| i-SpectrAnalysis indicator initialization function               | 
//+------------------------------------------------------------------+ 
void OnInit()
  {
//--- èíèöèàëèçàöèÿ ïåðåìåííûõ íà÷àëà îòñ÷¸òà äàííûõ
   tnn1=int(MathPow(2,N));
   M=ArrayResize(aa,tnn1+1);
   ss=int(MathMin(SS,M));
   min_rates_total=int(M);
//--- ïðåâðàùåíèå äèíàìè÷åñêîãî ìàññèâà â èíäèêàòîðíûé áóôåð
   SetIndexBuffer(0,IndBuffer,INDICATOR_DATA);
//--- îñóùåñòâëåíèå ñäâèãà èíäèêàòîðà 1 ïî ãîðèçîíòàëè
   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);
//--- îñóùåñòâëåíèå ñäâèãà íà÷àëà îòñ÷¸òà 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,0);
//--- ñîçäàíèå èìåíè äëÿ îòîáðàæåíèÿ â îòäåëüíîì ïîäîêíå è âî âñïëûâàþùåé ïîäñêàçêå
   IndicatorSetString(INDICATOR_SHORTNAME,"i-SpecktrAnalis");
//--- îïðåäåëåíèå òî÷íîñòè îòîáðàæåíèÿ çíà÷åíèé èíäèêàòîðà
   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
//--- çàâåðøåíèå èíèöèàëèçàöèè
  }
//+------------------------------------------------------------------+ 
//| i-SpecktrAnalis 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 int begin,          // íîìåð íà÷àëà äîñòîâåðíîãî îòñ÷¸òà áàðîâ
                const double &price[])    // öåíîâîé ìàññèâ äëÿ ðàñ÷¸òà èíäèêàòîðà
  {
//--- ïðîâåðêà êîëè÷åñòâà áàðîâ íà äîñòàòî÷íîñòü äëÿ ðàñ÷¸òà
   if(rates_total<min_rates_total+begin) return(0);
//---
   for(int bbb=rates_total-1; bbb>=prev_calculated && !IsStopped(); bbb--) IndBuffer[rates_total-1-bbb]=0.0;
//---
   int end=M-1;
   for(int iii=M-1; iii>=0 && !IsStopped(); iii--) aa[iii]=price[rates_total-1-iii];
   fastcosinetransform(aa,tnn1,false);
   for(int kkk=0; kkk<=end && !IsStopped(); kkk++) if(kkk>=ss) aa[kkk]=0.0;
   fastcosinetransform(aa,tnn1,true);
   for(int rrr=0; rrr<=end && !IsStopped(); rrr++) IndBuffer[rates_total-1-rrr]=aa[rrr];
//---
   return(rates_total);
  }
//+------------------------------------------------------------------+