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RE: [amibroker] Detrending



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<SPAN 
class=992101316-01052003>Bob,
<SPAN 
class=992101316-01052003> 
Thanks 
for posting. A goggle search produces several more 
variations.......
<SPAN 
class=992101316-01052003> 
from 
equis.. <A 
href="">http://www.paritech.com/education/technical/custom/indicators/detrended.asp
<SPAN 
class=992101316-01052003> 
from 
GannAnalyst   <A 
href="">http://www.gannalyst.com/Gannalyst_lite/Gannalyst_Indicators_DetrendedPrice.asp
<SPAN 
class=992101316-01052003> 
from 
Equity Analytics  <A 
href="">http://www.e-analytics.com/dpo.htm     
This seems to agree with yours
<SPAN 
class=992101316-01052003> 
<SPAN 
class=992101316-01052003> Most seem to follow your similar theme but may 
arrive at the final calculation from a slightly different angle.. 

<SPAN 
class=992101316-01052003> 
Have 
you  used this indicator in your trading and if so what has been your 
"take" on its usefulness?
 Jayson 
<FONT face=Tahoma 
size=2>-----Original Message-----From: Bob Jagow 
[mailto:bjagow@xxxxxxxxxxx]Sent: Thursday, May 01, 2003 11:57 
AMTo: amibroker@xxxxxxxxxxxxxxxSubject: RE: [amibroker] 
Detrending
<FONT color=#000080 
size=2>Jason,
I 
believe the DPO should be
<FONT 
size=2> 
Pds=Param(<FONT 
color=#ff00ff>"PDS",2<FONT 
color=#ff00ff>0,1,<FONT 
color=#ff00ff>200,1);
dma = Ref(<FONT 
color=#0000ff>MA(C,pds),-(pds/2+<FONT 
color=#ff00ff>1));
dpo=C-dma;
Plot<FONT 
size=2>(dma,"DMA",2,styleLeftAxisScale);
Plot<FONT 
size=2>(dpo,"DPO",5,4);
PlotGrid<FONT 
size=2>(0,colorWhite);
 
<FONT color=#000080 
size=2>That is, you are subtracting a Hurst shifted-MA as the Achelis ref 
badly shows.
I 
added the MA so that the best period can be picked via the Pds 
param.
<FONT color=#000080 
size=2> 
<FONT color=#000080 
size=2>Bob
 
<FONT 
color=#000000> 

  <FONT face=Tahoma 
  size=2>-----Original Message-----From: Jayson 
  [mailto:jcasavant@xxxxxxxxxxxx]Sent: Thursday, May 01, 2003 7:08 
  AMTo: amibroker@xxxxxxxxxxxxxxxSubject: RE: [amibroker] 
  Detrending
  <SPAN 
  class=025080514-01052003>Chuck,
  I do 
  not how useful you will find this bur here is the detrended Price 
  Oscillator  (DPO)....
  <SPAN 
  class=025080514-01052003> 
  <FONT 
  color=#282828> <FONT 
  color=#0000ff>
  Pds=Param("PDS",10,1,200,1<FONT 
  color=#282828><FONT color=#0000ff face="Arial CE" 
  size=2>);
  dpo=C<FONT 
  face="Arial CE">-(MA(C,(pds/2)+1<FONT 
  color=#282828>));<FONT 
  color=#0000ff>
  Plot(dpo,<FONT 
  color=#ff00ff>"DPO",<FONT 
  color=#ff00ff>4,<FONT 
  color=#ff00ff>1);<FONT 
  color=#0000ff>
  PlotGrid(<FONT 
  color=#ff00ff>0,<FONT 
  color=#000000>colorWhite<FONT color=#282828 
  face="Arial CE" size=2>);
   
  <SPAN 
  class=025080514-01052003>here is the reference from TA A-Z    
  <A 
  href="">http://www.equis.com/Education/TAAZ/?page=48
   
   Jayson 
  <FONT face=Tahoma 
  size=2>-----Original Message-----From: Chuck Rademacher 
  [mailto:chuck_rademacher@xxxxxxxxxx]Sent: Thursday, May 01, 2003 
  5:17 AMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] 
  Detrending
  Has 
  anyone written any AFL code for "detrending" that they are willing to 
  share?
  <FONT color=#0000ff face=Arial 
  size=2> 
  If 
  not, is anyone interested in the code if I have to write 
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