//+------------------------------------------------------------------+
//|                                                      RSI-3TF.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//|                                                                  |
//|                   04.10.2005 Модернизация Ким Игорь В. aka KimIV |
//|                                              http://www.kimiv.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"

#property indicator_separate_window
#property indicator_minimum 0
#property indicator_maximum 100
#property indicator_buffers 5
#property indicator_color1 Yellow
#property indicator_color2 Red
#property indicator_color3 DodgerBlue
#property indicator_color4 Magenta
#property indicator_color5 Green

//------- Внешние параметры индикатора -------------------------------
extern int RSI_Period_0 = 14;
extern int RSI_Period_1 = 14;
extern int TF_1         = 30;
extern int UP_Level_1   = 60;
extern int DN_Level_1   = 40;
extern int TF_2         = 60;
extern int RSI_Period_2 = 14;
extern int UP_Level_2   = 60;
extern int DN_Level_2   = 40;

//------- Буферы индикатора ------------------------------------------
double RSIBuffer[];
double UP_Lev_1[];
double DN_Lev_1[];
double UP_Lev_2[];
double DN_Lev_2[];
double PosBuffer[];
double NegBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void init() {
  string short_name;
  //---- 2 additional buffers are used for counting.
  IndicatorBuffers(7);
  SetIndexBuffer(5,PosBuffer);
  SetIndexBuffer(6,NegBuffer);
  //---- indicator line
  SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
  SetIndexBuffer(0,RSIBuffer);
  SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,2);
  SetIndexBuffer(1,UP_Lev_1);
  SetIndexStyle(2,DRAW_LINE,STYLE_SOLID,2);
  SetIndexBuffer(2,DN_Lev_1);
  SetIndexStyle(3,DRAW_LINE,STYLE_SOLID,4);
  SetIndexBuffer(3,UP_Lev_2);
  SetIndexStyle(4,DRAW_LINE,STYLE_SOLID,4);
  SetIndexBuffer(4,DN_Lev_2);
  //---- name for DataWindow and indicator subwindow label
  short_name="RSI("+RSI_Period_0+")";
  IndicatorShortName(short_name);
  SetIndexLabel(0,short_name);
  short_name="RSI("+RSI_Period_1+")";
  SetIndexLabel(1,short_name);
  SetIndexLabel(2,short_name);
  short_name="RSI("+RSI_Period_2+")";
  SetIndexLabel(3,short_name);
  SetIndexLabel(4,short_name);

  SetIndexDrawBegin(0,RSI_Period_0);
  SetIndexDrawBegin(1,RSI_Period_1);
  SetIndexDrawBegin(2,RSI_Period_1);
  SetIndexDrawBegin(3,RSI_Period_2);
  SetIndexDrawBegin(4,RSI_Period_2);
}

//+------------------------------------------------------------------+
//| Relative Strength Index                                          |
//+------------------------------------------------------------------+
void start() {
  double rel, negative, positive;
  double rsi1, rsi2;
  int    i, counted_bars=IndicatorCounted();
  int    nb1, nb2;

  if(Bars<=RSI_Period_0) return(0);
  //---- initial zero
  if(counted_bars<1)
      for(i=1;i<=RSI_Period_0;i++) RSIBuffer[Bars-i]=0.0;
  //----
  i=Bars-RSI_Period_0-1;
  if (counted_bars>=RSI_Period_0) i=Bars-counted_bars-1;
  while (i>=0) {
    double sumn=0.0,sump=0.0;
    if (i==Bars-RSI_Period_0-1) {
      int k=Bars-2;
      //---- initial accumulation
      while (k>=i) {
        rel=Close[k]-Close[k+1];
        if (rel>0) sump+=rel;
        else       sumn-=rel;
        k--;
      }
      positive=sump/RSI_Period_0;
      negative=sumn/RSI_Period_0;
    } else {
      //---- smoothed moving average
      rel=Close[i]-Close[i+1];
      if (rel>0) sump=rel;
      else       sumn=-rel;
      positive=(PosBuffer[i+1]*(RSI_Period_0-1)+sump)/RSI_Period_0;
      negative=(NegBuffer[i+1]*(RSI_Period_0-1)+sumn)/RSI_Period_0;
    }
    PosBuffer[i]=positive;
    NegBuffer[i]=negative;
    if (negative==0.0) RSIBuffer[i]=0.0;
    else RSIBuffer[i]=100.0-100.0/(1+positive/negative);

    nb1=iBarShift(NULL, TF_1, Time[i], False);
    nb2=iBarShift(NULL, TF_2, Time[i], False);

    rsi1=iRSI(NULL, TF_1, RSI_Period_1, PRICE_CLOSE, nb1);
    rsi2=iRSI(NULL, TF_2, RSI_Period_2, PRICE_CLOSE, nb2);

    UP_Lev_1[i]=EMPTY_VALUE;
    DN_Lev_1[i]=EMPTY_VALUE;
    UP_Lev_2[i]=EMPTY_VALUE;
    DN_Lev_2[i]=EMPTY_VALUE;

    if (rsi1>=UP_Level_1) UP_Lev_1[i]=94;
    if (rsi1<=DN_Level_1) DN_Lev_1[i]=6;
    if (rsi2>=UP_Level_2) UP_Lev_2[i]=98;
    if (rsi2<=DN_Level_2) DN_Lev_2[i]=2;

    i--;
  }
}
//+------------------------------------------------------------------+