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[amibroker] Re: Back up of Custom Indicators



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I think I know, the reason is that exp mov average 
takes the value of previous array in its calcul.
if the period array is variable, the previous array 
is changing.
 
stephane
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  <A title=s.carrasset@xxxxxxxxxxx 
  href="">Stephane Carrasset 
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Wednesday, May 05, 2004 9:50 
  AM
  Subject: [amibroker] variable ATR bad 
  value comapes fixed ATR
  
  Hello,
   
  I don't solve this problem:
  I am trying in afl to get a variable period ATR 
  in minutes Bars
  in this example I use Ema instead of 
  wilders....
   
  
  M1= H-L;
  M2= Ref<FONT 
  size=1>(C,-1)- 
  H;
  M3= Ref<FONT 
  size=1>(C,-1)- 
  L;
  TR = Max(<FONT 
  color=#0000ff size=1>Max(<FONT color=#0000ff 
  size=1>abs(M2),<FONT color=#0000ff 
  size=1>abs(M3)), M1);
  start=Day<FONT 
  size=1>()>Ref<FONT 
  size=1>(Day<FONT 
  size=1>(),-1<FONT 
  size=1>);
  Len=<FONT color=#0000ff 
  size=1>BarsSince(start)+<FONT color=#ff00ff 
  size=1>1;<FONT face="Courier New" color=#008000 
  size=1>
  //Len=40;
  Factor = 2<FONT 
  face="Courier New" size=1>/(Len+<FONT face="Courier New" color=#ff00ff 
  size=1>1);<FONT 
  color=#0000ff size=1>
  Plot(<FONT color=#0000ff 
  size=1>ValueWhen(<FONT face="Courier New" 
  size=1>Len==<FONT face="Courier New" color=#ff00ff 
  size=1>40,<FONT 
  face="Courier New" color=#0000ff size=1>AMA(<FONT 
  face="Courier New" size=1>TR,<FONT 
  face="Courier New" size=1>Factor)<FONT 
  face="Courier New" size=1>),<FONT color=#ff00ff 
  size=1>"",2<FONT 
  size=1>,1<FONT 
  size=1>);
  Plot(<FONT color=#0000ff 
  size=1>ValueWhen(<FONT face="Courier New" 
  size=1>Len==<FONT face="Courier New" color=#ff00ff 
  size=1>40,<FONT 
  face="Courier New" color=#0000ff size=1>EMA(<FONT 
  face="Courier New" size=1>TR,<FONT 
  face="Courier New" color=#ff00ff size=1>40)<FONT 
  face="Courier New" size=1>),<FONT color=#ff00ff 
  size=1>"",3<FONT 
  size=1>,1);
   
  I suppose that for a given 
  bar, when the variable period == 40 ( for example), the results of 
  variable ATR( with use of AMA)
  must be the same as the 
  ATR(40);
  and it is not the 
  case????
  Any Idea 
  Why???
   
  <FONT face=Arial 
  size=2>StephaneSend BUG REPORTS to 
  bugs@xxxxxxxxxxxxxSend SUGGESTIONS to 
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