//+------------------------------------------------------------------+
//|                                                       SMI_v2.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//|                                                                  |
//| Modified to use SMI_Helper                                       |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 White
#property indicator_color2 Red
#property indicator_level1 0
//---- input parameters
extern int       Period_Q=15;
extern int       Period_R=50;
extern int       Period_S=5;
extern int       Signal=3;
extern int       method   =1;          // O MODE_SMA 1 MODE_EMA 2 MODE_SMMA 3 MODE_LWMA 
//---- buffers
double SMI_Buffer[];
double Signal_Buffer[];
double EMA2_SM;
double EMA2_HQ;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
//   IndicatorBuffers(8);
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,SMI_Buffer);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,Signal_Buffer);
   SetIndexLabel(0,"SMI");
   SetIndexLabel(1,"Signal SMI");

   IndicatorShortName("SMI("+Period_Q+","+Period_R+","+Period_S+","+Signal+")");
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- TODO: add your code here
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted();
   int limit;
   int i;
//   double Median_Q[];
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
//   limit=Bars-counted_bars;
   limit=Bars;
   
   for (i=limit-Period_R-Period_S-Signal;i>=0;i--)
      {
      EMA2_SM = iCustom(NULL,0,"SMI_Helper",Period_Q, Period_R, Period_S, Signal,method,0,i);
      EMA2_HQ = iCustom(NULL,0,"SMI_Helper",Period_Q, Period_R, Period_S, Signal,method,1,i);
      SMI_Buffer[i]=100*EMA2_SM/0.5/EMA2_HQ;
      }
   for (i=limit;i>=0;i--)
      {
      Signal_Buffer[i]=iMAOnArray(SMI_Buffer,0,Signal,0,method,i);
      }

//---- TODO: add your code here
   
//----
   return(0);
  }
//+------------------------------------------------------------------+