Re: [amibroker] Inverse functions

["emarco" <emarco@xxxxxxxxxxxxxxx>]

How can I plot or graph the keltner 
channel with the price bars?
 
// Length and Num_ATRs parameters 
should be personalized for your> > preferred settings.> 
>> > Mov_Avg = EMA(C,Length);> > KUP   = 
Mov_Avg + Num_ATRs * ATR(Length);> > KDOWN = Mov_Avg - Num_ATRs * 
ATR(Length);> >> >> > Plot 
(KUP,"KUP",1,1);> > Plot (KDown,"Kdown",1,1);> > Plot 
(Mov_Avg,"Mov_Avg",6,1);
 
Thanks
 
Juan
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Dimitris 
  Tsokakis 
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Monday, August 11, 2003 5:50 
  AM
  Subject: [amibroker] Inverse 
  functions
  
  We usually express an MA or an EMA or a DEMA as a function 
  of Close.
  The inverse functions are interesting in T/A 
  studies.
  Paste in an indicator builder window the verification 
  formula
   
  // Inverse functions, by D. Tsokakis, Aug 
  2003
  p=20;fp=<FONT 
  size=2>2/(p+1<FONT 
  face=Verdana size=2>);<FONT 
  face="Times New Roman">
  CloseviaMA=p*MA<FONT 
  size=2>(C,p)-(p-1)*<FONT 
  size=2>Ref(MA<FONT 
  size=2>(C,p-1),-<FONT 
  size=2>1);// 
  [1]
  CloseviaEMA=0.5*((P+<FONT 
  size=2>1)*EMA<FONT 
  size=2>(C,P)-(P-1)*<FONT 
  size=2>Ref(EMA<FONT 
  size=2>(C,P),-1<FONT 
  face="Times New Roman">));// [2]
  CloseviaDEMA=(DEMA<FONT 
  size=2>(C,p)+(1-fp)*fp*<FONT 
  size=2>Ref(EMA<FONT 
  size=2>(C,p),-1)-(<FONT 
  size=2>1-fp)*Ref<FONT 
  size=2>(DEMA(C,p),-<FONT 
  size=2>1))/((2<FONT 
  face=Verdana size=2>-fp)*fp);// 
  [3]
  Plot(C,"CLOSE"<FONT 
  size=2>,1,<FONT 
  size=2>1<FONT 
  face="Times New Roman">);<FONT 
  face="Times New Roman">
  Plot(CloseviaMA,<FONT 
  size=2>"CloseviaMA",5<FONT 
  size=2>,1<FONT 
  face="Times New Roman">);<FONT 
  face="Times New Roman">
  Plot(CloseviaEMA,<FONT 
  size=2>"CloseviaEMA",7<FONT 
  size=2>,1<FONT 
  face="Times New Roman">);<FONT 
  face="Times New Roman">
  Plot(CloseviaDEMA,<FONT 
  size=2>"CloseviaDEMA",4<FONT 
  size=2>,1<FONT 
  face="Times New Roman">);
   
  As an application 
  you may have the nextbarClose as a function of nextbarMA or nextbarEMA or 
  nextbarDEMA.
  <FONT 
  face="Times New Roman">Example:
  From [1] we may have
  <FONT 
  face="Times New Roman">nextbarCloseviaMA=p*nextbarMA(C,p)-(p-1)*MA(C,p-1)
  If we know 
  nextbarMA, or if we ask a certain condition for nextbarMA, then we may know 
  the necessary nextbarClose
  to fulfill the 
  condition.
  Dimitris 
  Tsokakis
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