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RE: [amibroker] Re: countback line



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<SPAN 
class=480055716-28092002>Franco:
<SPAN 
class=480055716-28092002> 
Tomaszwill jump 
in here sometime and say that the AMA or ___? other function in Amibroker does 
exactly what PREV does in MS and does it faster. I do not use it and so do not 
have it committed to memory.  You could search in the amibroker yahoo group 
for PREV or AMA or wait and perhaps Tomasz or someone else will post a past 
message on this topic.
<SPAN 
class=480055716-28092002> 
<SPAN 
class=480055716-28092002>Ken
<FONT face=Tahoma 
size=2>-----Original Message-----From: Franco Fornari 
[mailto:ffpsi@xxxx]Sent: Saturday, September 28, 2002 12:09 
PMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: [amibroker] 
Re: countback line
Hello,
 
yes, I know there isn't in AFL a function 
equivalent to PREV. I tried to use a VB Script, but I'm not able enough. Do 
you know if there is, somewhere on the WEB, the original Guppy's 
formula?
 
Best regards,
 
Franco 
<BLOCKQUOTE 
>
----- Original Message ----- 
<DIV 
>From: 
Stephane 
Carrasset 
To: <A 
href="" 
title=amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx 
Sent: Saturday, September 28, 20024:51 
PM
Subject: [amibroker] Re: countback 
line
hello,there is not prev function in 
Amibrokerprev is a recursive function, BUT you can defind it  
with a scripting languagemy choise was since one year was C++but there 
is jscript and vbscriptabout the cbl, I think the ms version is not 
matching the guppy principles but only an adaptation .this is notthe 
best trailing stop...steph> > thanks for your reply. 
Maybe you are referring to the dll shared by Stephan. I know it, but its 
logic seems rather different and I'd like to match it against Metastock's 
CBL.> > Thanks again and best regards> > 
Franco>   ----- Original Message ----- >   
From: grant >   To: amibroker@xxxx >   Sent: 
Saturday, September 28, 2002 4:14 PM>   Subject: Re: 
[amibroker] countback line> > >   Franco, 
>       CBL has been converted somewhere 
here before but I can't find it at the moment, >   maybe 
if you check AB website formular page. I have a feeling it was also in one 
>   of Steven's DLL's. Sorry I'm not much help to you but at 
least you know it's here >   somewhere, I'll keep 
looking. 
>                       
Grant >   Franco Fornari wrote: > 
>     Hello Tomasz and All, sorry if I proposethe 
same question again, but I'd need to know if it's possible to convertfrom 
Metastock language to AFL any formula containing PREV function. Tomasz 
showed many times, in past, how work AMA and AMA2 but, if I'm not wrong, 
this case seems different, because in "Countback line" Metastock formula, 
PREV doesn't refer to any averages but to hard values. Is it possibleto 
translate the following formula to AFL? LowDays := Input("Enter # days to 
cover last LOW for CBL calc'n:", 3, 55, 13); 
>     If(LOW > LLV(LOW, LowDays), {then ...} 
PREV, {previous CBLlo, else...} If(Ref(H,-2) > Ref(H,-1) AND Ref(H,-2) 
> H AND Ref(H,-1) > H, {then ...} Ref(H,-2), {2nd day back 
high,else...} If((Ref(H,-3)> Ref(H,-2) AND Ref(H,-3) > Ref(H,-1) AND 
Ref(H,-3) > H) AND (Ref(H,-2)> H OR Ref(H,-1) > H), {then ... } 
Ref(H,-3), {3rd day back high,else...} If((Ref(H,-4)> Ref(H,-3) AND 
Ref(H,-4) > Ref(H,-2) AND Ref(H,-4) > Ref(H,-1) AND Ref(H,-4) > 
H) AND (Ref(H,-3)> H OR Ref(H,-2) > H OR Ref(H,-1) > H), {then... 
} Ref(H,-4), {4th day back high,else...} If((Ref(H,-5)> Ref(H,-4) AND 
Ref(H,-5) > Ref(H,-3) AND Ref(H,-5) > Ref(H,-2) AND Ref(H,-5) > 
Ref(H,-1) AND Ref(H,-5) > H) AND (Ref(H,-4)> H OR Ref(H,-3) > H 
OR Ref(H,-2) > H OR Ref(H,-1) > H), {then ...} Ref(H,-5), {5th day 
back high,else...} PREV ))))) Any suggestion will be wellcome. Best 
regards, Franco   > > > 
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