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The following code will do what you asked, I think. You will have to
create two symbols, not really composites although I use that naming
convention. They are ~NYSE and ~NASD. The format of the files is
OHLCVX where O = adv issues, C = dec issues and H is the higher of
the two and L is the lower of the two. V is adv volume and X (open
interest) is dec Volume. I use this to calculate a cumulative
adv/dec and Moving Balance Indicator. They are fairly useful tools
too. The data and code for the MBI are on my website,
www.imageview.us. The data is not up to date thought. I will try to
get that updated if time permist.
Note the data source I use is specified in the code comments.
Barry
_SECTION_BEGIN("McClellan Index");
// By Barry Scarborough. Written 12/13/05
// Data source - http://unicorn.us.com/advdec/
// you must download this manually every day or use a macro or
script to extract the data.
// If you use a macro use http://unicorn.us.com/advdec/recent.txt as
the source
// advancing issues
function fUpIssues(market) { return Foreign(market,"O"); } // get
the up issues
// declining issues
function fDnIssues(market) { return Foreign(market,"C"); } // get
the down issues
tgl = ParamToggle("Select Market", "NYSE|NASD", 0);
if (!tgl)
{
mkt = "~NYSE";
index = "^NYA";
}
else
{
mkt = "~NASD";
index = "^IXIC";
}
per1 = Param("Fast EMA", 19, 1, 50, 1);
per2 = Param("Slow EMA", 39, 39, 75, 1);
ema1 = EMA(fUpIssues(mkt )-fDnIssues(mkt ), per1);
ena2 = EMA(fUpIssues(mkt )-fDnIssues(mkt ), per2);
Plot(Cum(ema1 - ena2), "McLellan Index(" + mkt + ")", colorRed );
Plot (Foreign(index, "C"), Index, colorBlue, styleLeftAxisScale);
Plot(0, "", colorBlack); // plots a zero reference line
_SECTION_END();
Another variation that I use is
// Cumulative Advance / Decline
// By Barry Scarborough
tgl = ParamToggle("Index", "NYSE|NASD", 0);
if (tgl) index = "NASD"; else index = "NYSE"; // select the index
period = Param("MA Period", 5, 1, 50, 1);
aI = Foreign("~" + index, "Open");
dI = Foreign("~" + index, "Close");
CumAD = Cum(aI-dI);
ad = aI - dI; // an array of daily H - L
ads5Day = Ref(MA(ad, period ),-1); // 5 day simple ma of the four
days before today
adsNext = ad; // todays a-d values
ads = (0.75 * ads5Day) + (0.25 * adsNext); // 75/25 weighted //
weight it 75-25
Plot(MA(CumAD ,period), "CumAD " + index + " MA(" + NumToStr(period,
2.0 ) + ") ", colorBlue) ;
Plot(CumAD , " Open-Close ", colorRed) ;
--- In amibroker@xxxxxxxxxxxxxxx, "areehoi" <rhoierman@xxxx> wrote:
>
> Is anyone using the McClellan Index? If so is it the one from the
AB
> library? The formula there is:
> Graph0 = Cum( EMA( AdvIssues()-DecIssues(), 19 ) - EMA(
> AdvIssues()-DecIssues(), 39 ) );
> The "AdvIssues" and "DecIssues" is a defined AFL function. Where it
> gets this data is a mystery to me as I do not have this data in my
> database yet it will come up with a chart on some symbols and not
on
> others (for example BHH yes IBM no). What I'm looking for is a
> McClellan Oscillator or Summation index that can utilize the
> advance/decline issue data in your own database(NYSE or NASDAQ) and
> has a zero line showing the index over or below it. I note some
> McClellan indicators multiply by 1000 (1000 is simply cosmetic so
> results are whole numbers instead of decimals). If anyone has
such a
> formula it would appreciated if you could send to me or post.
Thanks.
>
> Dick H
>
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