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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 ) - EMA( 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
>
>
>
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>
>
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