AdvancedGetOscillator

//+------------------------------------------------------------------+
//|                                      Advanced Get Oscillator.mq4 |
//|                      Copyright © 2007, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"



#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 SlateBlue
#property indicator_color2 White
#property indicator_color3 White
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
double ExtMapBuffer5[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
IndicatorBuffers(5);
//---- 3 additional buffers are used for counting.
SetIndexBuffer(3, ExtMapBuffer4);
SetIndexBuffer(4, ExtMapBuffer5);

//---- indicators
SetIndexStyle(0,DRAW_HISTOGRAM);
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,ExtMapBuffer2);
SetIndexStyle(2,DRAW_LINE);
SetIndexBuffer(2,ExtMapBuffer3);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();
//----
//---- 
int limit;
//---- check for possible errors
if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars; 
//----
for(int i=0; i<limit; i++)
ExtMapBuffer4[i]=iMA(NULL,0,5,0,MODE_SMA,PRICE_MEDIAN ,i);
for(i=0; i<limit; i++)
ExtMapBuffer5[i]=iMA(NULL,0,34,0,MODE_SMA,PRICE_MEDIAN,i);
for(i=0; i<limit; i++)
ExtMapBuffer1[i]=ExtMapBuffer4[i]-ExtMapBuffer5[i];
double pr=2.0/(38+1); 
int pos=Bars-2;
if (counted_bars>2) pos=Bars-counted_bars-1;
while(pos>=0) 
{ 
if((pos==Bars-2))
{ ExtMapBuffer2[pos+1]=ExtMapBuffer1[pos+1];
ExtMapBuffer3[pos+1]=ExtMapBuffer1[pos+1];
}
if (ExtMapBuffer1[pos]>=0)
{ 
ExtMapBuffer2[pos]=ExtMapBuffer1[pos]*pr+ExtMapBuffer2[pos+1]*(1-pr);
ExtMapBuffer3[pos]=ExtMapBuffer3[pos+1];
}
else 
{ 
ExtMapBuffer2[pos]=ExtMapBuffer2[pos+1];
ExtMapBuffer3[pos]=ExtMapBuffer1[pos]*pr+ExtMapBuffer3[pos+1]*(1-pr);
} 
pos--;
}


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