/* This indicator is absolutely identical to the classical oscillator 
and the same with RSI methods of technical analysis may be applicable 
to this indicator as well. Because of use more absolute 
algorithmes of smoothing this indicator is having lesser 
delay and more smoothed curve.
 */
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
//|                                                         JRSX.mq4 |
//|          JRSX: Copyright © 2005,            Weld, Jurik Research | 
//|                                          http://weld.torguem.net | 
//|          MQL4: Copyright © 2005,                Nikolay Kositsin | 
//|                                   Khabarovsk, violet@mail.kht.ru |   
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
#property copyright "Weld" 
#property link "http://weld.torguem.net" 
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Magenta
#property indicator_level1 70
#property indicator_level2 30
#property indicator_level3 50
#property indicator_maximum 100
#property indicator_minimum 0
//---- input parameters
extern int       Lengh=14;
//---- buffers
double JRSX_Bufer[];
//----
int    shift,r,w,k,Tnew,counted_bars,T0,T1;
//----
double v4,v8,v10,v14,v18,v20,v0C,v1C,v8A;   
double F28,F30,F38,F40,F48,F50,F58,F60,F68,F70,F78,F80; 
double f0,f28,f30,f38,f40,f48,f50,f58,f60,f68,f70,f78,f80,Kg,Hg;
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
//| Custom indicator initialization function                         |
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
int init()
  {
//---- indicators

   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,JRSX_Bufer);
   IndicatorShortName("RSX("+Lengh+")");
   SetIndexEmptyValue(0,50.0);
//----
return(0);
  }
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
//| Custor indicator deinitialization function                       |
//+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS+
int start()
{
counted_bars=IndicatorCounted();
if (counted_bars<0) return(-1);

if (counted_bars>Lengh) shift=Bars-counted_bars-1;
else shift=Bars-Lengh-1;

Tnew=Time[shift+1];

//+--- восстановление переменных +=====================+
if((Tnew!=T0)&&(shift<Bars-Lengh-1)) 
{
if (Tnew==T1)
{
f28=F28; f30=F30; f38=F38; f40=F40; f48=F48; f50=F50;
f58=F58; f60=F60; f68=F68; f70=F70; f78=F78; f80=F80;
}
else return(-1);
}
//+--- +===============================================+

if (Lengh-1>=5)w=Lengh-1;else w=5; Kg=3/(Lengh+2.0); Hg=1.0-Kg;

while (shift >= 0)
{//+-------------------+
if (r==0)
{//...
r = 1; k = 0;
}//...
else
{//++++++++++++++++++++
if (r>=w) r=w+1; else r=r+1;

v8 = Close[shift]-Close[shift+1]; v8A=MathAbs(v8);

//---- вычисление V14 ------
f28 = Hg  * f28 + Kg  *  v8;
f30 = Kg  * f28 + Hg  * f30;
v0C = 1.5 * f28 - 0.5 * f30;
f38 = Hg  * f38 + Kg  * v0C;
f40 = Kg  * f38 + Hg  * f40;
v10 = 1.5 * f38 - 0.5 * f40;
f48 = Hg  * f48 + Kg  * v10;
f50 = Kg  * f48 + Hg  * f50;
v14 = 1.5 * f48 - 0.5 * f50;
//---- вычисление V20 ------
f58 = Hg  * f58 + Kg  * v8A;
f60 = Kg  * f58 + Hg  * f60;
v18 = 1.5 * f58 - 0.5 * f60;
f68 = Hg  * f68 + Kg  * v18;
f70 = Kg  * f68 + Hg  * f70;
v1C = 1.5 * f68 - 0.5 * f70;
f78 = Hg  * f78 + Kg  * v1C;
f80 = Kg  * f78 + Hg  * f80;
v20 = 1.5 * f78 - 0.5 * f80;

if ((r <= w) && (v8!= 0)) k = 1;
if ((r == w) && (k == 0)) r = 0;
}//++++++++++++++++++++
if ((r >  w) &&(v20 > 0.0000000001 )) ///0.0000000001=={1.0e-10};
{//...
v4 = (v14/v20+1.0)*50.0; if(v4>100.0)v4=100.0; if(v4<0.0)v4=0.0;
}//...
else  v4 = 50.0;
JRSX_Bufer[shift]=v4;

//+--- Сохранение переменных +========================+  
if (shift==1)
{
T1=Time[1];T0=Time[0];
F28=f28; F30=f30; F38=f38; F40=f40; F48=f48; F50=f50;
F58=f58; F60=f60; F68=f68; F70=f70; F78=f78; F80=f80;
}
//+---+===============================================+

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