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Ken,
AdvIssues and remaining A/D functions get their data from
internal AmiBroker arrays that get calculated when you
do Symbol->Calculate composites (see the newsletter).
Unfortunatelly for non-native AB databases (external ones)
this process may be extremely slow.
So they should be used only if you keep data in AmIBroker
native database.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Ken Close" <closeks@xxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, September 27, 2002 7:27 PM
Subject: RE: [amibroker] McClellan: a question
> Tomasz, jayson, otheres who have replied:
>
> I think I said I realized that I could use composites but for me that would
> take forever. I already look at various symbols from eSignal and FastTrack
> to keep up on adv/declines, etc.
>
> My specific question, which has yet to be answered is: since there are
> built-in AFL functions called AdvIssues() and DecIssues() ( as used below by
> Gilles which prompted my whole "stupid question" message.....
>
> Graph0 = EMA( AdvIssues()-DecIssues(), 19 ) - EMA( AdvIssues()-
> DecIssues(), 39 );
>
> .....I just wonder where these functions draw their answer/result from. It
> sounds like they do some kind of internal composite calculation, but over
> what issues, and when you click on your formula (say in the AA window) does
> the computer go into sleep mode while the internal routines go thru hundreds
> if not thousands of symbols creating the result. I said this was a stupid
> question, but maybe it is not.
>
> Can someone recycle and explain some more on this...I still don't get it
> all.
>
> Thanks,
> Ken
>
> -----Original Message-----
> From: Tomasz Janeczko [mailto:amibroker@x...]
> Sent: Friday, September 27, 2002 1:18 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] McClellan: a question
>
>
> Ken,
>
> There is an article in the newsletter
> http://www.amibroker.com/newsletter/04-2000.html
> that explains bits about a/d info.
>
> Yes "calc composites" performs global count on entire database.
> However if you are using the database that already provides
> A-D info (like Quotes Plus for example) you should use
> alternative formulas for indicators like McClellan.
>
> For example QP2 McClellan for NYSE is:
>
> Graph0 = EMA( Foreign("!NY-A","C")-Foreign("!NY-D","C"), 19 ) -
> MA( Foreign("!NY-A","C")-Foreign("!NY-D","C"), 39 );
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Ken Close" <closeks@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Friday, September 27, 2002 12:43 PM
> Subject: RE: [amibroker] McClellan: a question
>
>
> > This is in the "Dumb Question" category, which I serve up every couple of
> > weeks without even trying.
> >
> > I have not tried but have wondered how Amibroker gets "Avdvancing Issues"
> > and "Declining Issues". Some databases have these and some do not, and
> the
> > symbols vary, so I assumed that AB does some massive "count" of the entire
> > database, or perhaps of some Index like the SP500.
> >
> > How does it do this?? <---- This is the dumb question part.
> >
> > Kind, gentle help will be appreciated.
> >
> > Ken
> >
> > -----Original Message-----
> > From: gillesdeprez [mailto:gillesdeprez@x...]
> > Sent: Friday, September 27, 2002 1:56 AM
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] McClellan: a question
> >
> >
> > Here is what I read in IB about McClellan Oscillator:
> > /*
> > McClellan Oscillator
> >
> > The McClellan Oscillator, developed by Sherman and Marian McClellan,
> > is a market breadth indicator that is based on the smoothed
> > difference
> > between the number of advancing and declining issues
> > on the New York Stock Exchange.
> > The McClellan Oscillator is one of the most popular breadth
> > indicators.
> > Buy signals are typically generated when the McClellan Oscillator
> > falls into
> > the oversold area of -70 to -100 and turns up.
> > Sell signals are generated when the oscillator rises into
> > the overbought area of +70 to +100 and then turns down.
> >
> > Graph0 = EMA( AdvIssues()-DecIssues(), 19 ) - EMA( AdvIssues()-
> > DecIssues(), 39 );
> >
> > Now, somebody knows why the graph limits are around -2 and +3, and
> > not -100/+100? The only formula I can find about this indicator is
> > always the same- the one used in AB...I must have missed something...
> > Is there anoter formula?
> > Thanks!
> > Gilles
> >
> >
> >
> > Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> > (Web page: http://groups.yahoo.com/group/amiquote/messages/)
> >
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> >
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> >
> >
> >
> >
> >
> > Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> > (Web page: http://groups.yahoo.com/group/amiquote/messages/)
> >
> > Check group FAQ at:
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> >
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> >
> >
> >
>
>
>
> Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> (Web page: http://groups.yahoo.com/group/amiquote/messages/)
>
> Check group FAQ at:
> http://groups.yahoo.com/group/amibroker/files/groupfaq.html
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
>
> Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> (Web page: http://groups.yahoo.com/group/amiquote/messages/)
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
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