SMI_Color

//+------------------------------------------------------------------+
//|                                                    SMI Color.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Yellow
#property indicator_color2 Green
#property indicator_color3 Red
#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 2
#property indicator_level1 0
#property indicator_level2 60
#property indicator_level3 -60


//---- input parameters
extern int       Period_Q =10;
extern int       Period_R =3;
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_BufferFLAT[];
double SMI_BufferUP[];
double SMI_BufferDOWN[];
double SMI_Buffer[];

double EMA2_SM;
double EMA2_HQ;

// double EMA_HQ[];
// double EMA_SM[];

// double SM_Buffer[];
// double HQ_Buffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   IndicatorBuffers(4);
   IndicatorDigits(Digits + 1);
   
//---- drawing settings
   SetIndexBuffer(0,SMI_BufferFLAT);       // FLAT SMI
   SetIndexBuffer(1,SMI_BufferUP);       // UP SMI
   SetIndexBuffer(2,SMI_BufferDOWN);       // DOWN SMI

// line => dot changes

/*
	SetIndexStyle(0,DRAW_LINE,STYLE_SOLID); 
	SetIndexStyle(1,DRAW_LINE,STYLE_SOLID); 
	SetIndexStyle(2,DRAW_LINE,STYLE_SOLID); 
*/

	SetIndexStyle(0,DRAW_ARROW);
	SetIndexStyle(1,DRAW_ARROW);
	SetIndexStyle(2,DRAW_ARROW);

	SetIndexArrow(0,159);
	SetIndexArrow(1,159);
	SetIndexArrow(2,159);
//----   

//----
   SetIndexBuffer(3,SMI_Buffer);
   
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("SMI("+Period_Q+","+Period_R+","+Period_S+","+Signal+")");

   SetIndexLabel(0,"SMI_FLAT");
   SetIndexLabel(1,"SMI_UP");
   SetIndexLabel(2,"SMI_DOWN");

//----  initialization done
   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-Period_Q-counted_bars;
   limit=Bars-Period_Q;


   for (i=limit-Period_R-Period_S;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);

// Color Handling

      if(SMI_Buffer[i+1] >  SMI_Buffer[i])
      {
       SMI_BufferUP[i] = EMPTY_VALUE ;
       SMI_BufferFLAT[i] = EMPTY_VALUE ;
       SMI_BufferDOWN[i] = SMI_Buffer[i] ;
      }
      else if(SMI_Buffer[i+1] <  SMI_Buffer[i])
      {
       SMI_BufferDOWN[i] = EMPTY_VALUE ;
       SMI_BufferFLAT[i] = EMPTY_VALUE ;
       SMI_BufferUP[i] = SMI_Buffer[i] ;
      }
      else
      {
       SMI_BufferUP[i] = EMPTY_VALUE ;
       SMI_BufferDOWN[i] = EMPTY_VALUE ;
       SMI_BufferFLAT[i] = SMI_Buffer[i] ;
      }
      }

//---- TODO: add your code here

//----
   return(0);
  }
//+------------------------------------------------------------------+