Barry,

They are identical on my machine.

// PPO Percentage Price Osc from MS and AB
// Same as MACD 
T1=Param("Fast Periods",7,2,100,1); 
T2=Param("Slow Periods",28,2,100,1); 

PPO = 100*(EMA(C,T1) - EMA(C,T2))/ EMA(C,T2); // MS 
test=OscP( T1 , T2 ) ; 

Plot(PPO," MS Percentage Price Osc ",2,1); 
//Plot(," AB Percentage Price Osc ",0,1); 
Plot(OscP(T1,T2),"AB OscP",3,1); //AB 

//====================================== 

// from http://www.amibroker.com/library/detail.php?id=1113 
// PPO X 100 
PPOShort = T1; 
PPOLong = T2; 
//PPOsignal = Param("PPOsignal", 9, 1, 150, 1); 
PPO = (EMA(C, PPOShort ) - EMA(C, PPOLong ))/ EMA(C, PPOLong ); 
//PPOS = (EMA(ppo, PPOsignal )); 
//Val=ppo-PPOS ; 
Plot( PPO*100 , "ppo", colorGreen, styleLine| styleThick ); 
//Plot ( PPOS ,"PPO Signal", colorOrange, styleLine| styleThick ); 
//dynamic_color = IIf( Val> 0, colorGreen, colorRed ); 
//Plot( Val, "PPO Histogram", dynamic_color, styleHistogram | styleThick ); 


-CS




  ----- Original Message ----- 
  From: Barry Scarborough 
  To: [email protected] 
  Sent: Friday, May 29, 2009 1:04 PM
  Subject: [amibroker] Re: Newbie here......Question about PPO





  But if you plot them both and look at the values there are off even when you 
multiply PPO by 100. There is something going on in OscP that makes the results 
different and I haven't a clue what it is. The small difference may not make 
any difference. Maybe OscP is not using EMAs. I don't know. I just know they do 
not return the same results. Maybe testing both will determine if either can be 
used.

  Barry

  --- In [email protected], "wavemechanic" <fim...@...> wrote:
  >
  > PPO = Percentage Price Oscillator. So, you want to deal in % and need to 
multiply the ema(fast) - ema(slow)/ema(slow) by 100. OscP() already does that. 
If you don't want the result in % then divide by 100. The key thing is that 
OscP() does the ema() calculation. The Users Guide should make that point.
  > 
  > Bill
  > ----- Original Message ----- 
  > From: Barry Scarborough 
  > To: [email protected] 
  > Sent: May 29, 2009 12:36 PM
  > Subject: [amibroker] Re: Newbie here......Question about PPO
  > 
  > 
  > OSCP and PPO are not the same. I plotted them and they are similar but off 
by a factor of 100.
  > 
  > Barry
  > 
  > --- In [email protected], "wavemechanic" <fimdot@> wrote:
  > >
  > > This is nothing but the built-in function OscP().
  > > 
  > > Bill
  > > ----- Original Message ----- 
  > > From: Mubashar virk 
  > > To: [email protected] 
  > > Sent: May 26, 2009 5:07 PM
  > > Subject: Re: [amibroker] Newbie here......Question about PPO
  > > 
  > > 
  > > 
  > > 
  > > 
  > > please google for "PPO+Amibroker", you will find the code.
  > > 
  > > 
  > > From: bretsmiles 
  > > Sent: Saturday, May 23, 2009 6:56 AM
  > > To: [email protected] 
  > > Subject: [amibroker] Newbie here......Question about PPO
  > > 
  > > 
  > > I do not see the PPO as an indicator in the AFL. Does it go by another 
name or is something we have to create ourselves.....Thanks in advance?
  > >
  > 
  > 
  > 
  > 
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