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I really like this piece of code( look at the bottom of the email)
which I pulled from the AFL library.
It allows us to verify price within bollinger bands. I have been
using it successfully on uptrending stocks which bounce off the
signal line back toward the upper bollinger band. The range is
usually a safe bet.
There is only one flaw in the AFL code.
If a ticker has too few quotes it goes into an endless loop.
( at least i think thatis what the problem is). I have tried to
figure it out but have not been successful
INWK is a recent example. It returns an endless loop.
INWK is in an uptrending stock ( first week on the IBD top 100)
appearing to be moving back to the 20 sma and preparing for a bounce.
When i try to view it in Amibroker the indicator returns an
endlessloop detected.
This is the exact error message ( below it is the actual AFL code):
----------------------------------------------------------
OuterPct = 100*( Sum( Over, LookBkPd ) + Sum( Under,
LookBkPd ))/LookBkPd ;
OP = LastValue(OuterPct) ;
X=X+sign( OP - ExternalBarPct )*deltaX ;
deltaX = deltaX/2 ;
---------------^
Error 14.
Endless loop detected in DO-WHILE loop
------------------------------------------------------------
This is the AFL indicator. Any help will be greatly appreciated.
// Daily Bar Chart
_SECTION_BEGIN("Elder Daily Chart with Envelope");
SetChartOptions(0,chartShowArrows|chartShowDates);
Plot( EMA(C,13),"EMA(13)",colorRed,styleLine);
PlotForeign(GetBaseIndex(),IndustryID
(1),colorGreen,styleLine|styleLeftAxisScale);
LookBkPd = 100 ;
AvgPd = 22 ;
ExternalBarPct = 15 ;
ConvergePct = 2 ;
Middle = EMA( C,AvgPd ) ;
Rng = HHV( H,LookBkPd ) - LLV( L,LookBkPd ) ;
X = Rng ;
deltaX = X/2 ;
do
{
Over = H > Middle + X ;
Under = L < Middle - X ;
OuterPct = 100*( Sum( Over, LookBkPd ) + Sum( Under,
LookBkPd ))/LookBkPd ;
OP = LastValue(OuterPct) ;
X=X+sign( OP - ExternalBarPct )*deltaX ;
deltaX = deltaX/2 ;
}
while ( abs( OP - ExternalBarPct ) > ConvergePct ) ;
Plot( Middle, "MA", colorLightGrey, styleLine|styleNoTitle ) ;
Plot( Middle+X, "MA", colorBlue, styleDashed|styleNoTitle ) ;
Plot( Middle-X, "MA", colorBlue, styleDashed|styleNoTitle ) ;
_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %
g, Lo %g, Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue(
ROC( C, 1 ) ) ));
Plot( C, "Close", ParamColor("Color", colorBlack ), styleCandle |
ParamStyle("Style") | GetPriceStyle() );
_SECTION_END();
Content-Description: "AVG certification"
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.409 / Virus Database: 268.14.11/542 - Release Date: 11/20/2006
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