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Thanks Anthony,
I did what you did, then added the rest of my code after yours and it
works fine.
Thanks again!
Jim
--- In amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso" <ajf1111@xxxx>
wrote:
> Jim,
>
> I added this to the bottom of the formula you posted...and ran an
explore in AA:
>
> Buy=LinRegSlope(C,60) > 0 AND C >= sdl AND C <= sdl*1.10 ;
>
> Sell=0;
>
> //Buy=ExRem(Buy,Sell);
>
> Filter=Buy > 0;
>
> AddColumn(C,"");
>
> ----- Original Message -----
> From: jnk1997
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, March 21, 2005 5:26 PM
> Subject: [amibroker] Re: Help with AFL Formula Please!
>
>
>
> Anthony,
>
> When I run with my formula I get an error on your line as follows:
>
> Error 29, variable "sdl" used without having been initialized
>
> What is sdl and how do I initialize it?
>
> I tried posted the Linear regression code before the trading
formula
> and the AFL checker keeps finding errors in that code even though
the
> code works perfect as an indicator on my charts.
>
>
> Thanks
>
> Jim
>
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso"
<ajf1111@xxxx>
> wrote:
> > Jim,
> >
> > try this:
> > LinRegSlope(C,60) > 0 AND C >= sdl and C <= sdl*1.10
> >
> >
> >
> > ----- Original Message -----
> >
> > From: jnk1997
> > To: amibroker@xxxxxxxxxxxxxxx
> > Sent: Monday, March 21, 2005 4:37 PM
> > Subject: [amibroker] Re: Help with AFL Formula Please!
> >
> >
> >
> > Yes Anthony,
> >
> > The lower Line (not the lowest) is the line I'm interested in
> finding
> > stocks closing price at. It's basically finding stocks in an
> uptrend
> > (Thats why the slope has to be greater than 0) that have
pulled
> back
> > to the lower regression line.
> >
> > Thanks for your help!
> > Jim
> >
> >
> >
> > _SECTION_BEGIN("Lin Regr Line w 2 Standard Deviation
Channels ");
> > // Linear Regression Line with 2 Standard Deviation Channels
> Plotted
> > Above and Below
> > // Written by Patrick Hargus, with critical hints from
Marcin
> > Gorzynski, Amibroker.com Technical Support
> > // Designed for use with AB 4.63 beta and above, using
drag
> and
> > drop feature.
> > // Permits plotting a linear regression line of any price
field
> > available on the chart for a period determined by the user.
> > // 2 Channels, based on a standard deviation each
determined
> by
> > the user, are plotted above and below the linear regression
line.
> > // A look back feature is also provided for
examining
> > how the indicator would have appeared on a chart X periods in
the
> > past.
> >
> >
> > P = ParamField("Price field",-1);
> > Daysback = Param("Period for Liner Regression
Line",21,1,240,1);
> > shift = Param("Look back period",0,0,240,1);
> >
> >
> > // =============================== Math Formula
> > =============================================================
> >
> > x = Cum(1);
> > lastx = LastValue( x ) - shift;
> > aa = LastValue( Ref(LinRegIntercept( p, Daysback), -shift) );
> > bb = LastValue( Ref(LinRegSlope( p, Daysback ), -shift) );
> > y = Aa + bb * ( x - (Lastx - DaysBack +1 ) );
> >
> >
> > // ==================Plot the Linear Regression Line
> > ==========================================================
> >
> >
> > LRColor = ParamColor("LR Color", colorCycle );
> > LRStyle = ParamStyle("LR Style");
> >
> > LRLine = IIf( x > (lastx - Daysback) AND BarIndex() < Lastx,
y,
> > Null );
> > Plot( LRLine , "LinReg", LRCOLOR, LRSTYLE ); // styleDots );
> >
> > // ========================== Plot 1st SD Channel
> >
===============================================================
> >
> > SDP = Param("Standard Deviation", 1.5, 0, 6, 0.1);
> > SD = SDP/2;
> >
> > width = LastValue( Ref(SD*StDev(p, Daysback),-shift) ); //
THIS
> IS
> > WHERE THE WIDTH OF THE CHANELS IS SET
> > SDU = IIf( x > (lastx - Daysback) AND BarIndex() < Lastx,
> y+width ,
> > Null ) ;
> > SDL = IIf( x > (lastx - Daysback) AND BarIndex() < Lastx, y-
> width ,
> > Null ) ;
> >
> > SDColor = ParamColor("SD Color", colorCycle );
> > SDStyle = ParamStyle("SD Style");
> >
> > Plot( SDU , "Upper Lin Reg", SDColor,SDStyle );
> > Plot( SDL , "Lower Lin Reg", SDColor,SDStyle );
> >
> > // ========================== Plot 2d SD Channel
> >
===============================================================
> >
> > SDP2 = Param("2d Standard Deviation", 2.0, 0, 6, 0.1);
> > SD2 = SDP2/2;
> >
> > width2 = LastValue( Ref(SD2*StDev(p, Daysback),-
shift) ); //
> THIS
> > IS WHERE THE WIDTH OF THE CHANELS IS SET
> > SDU2 = IIf( x > (lastx - Daysback) AND BarIndex() < Lastx,
> y+width2 ,
> > Null ) ;
> > SDL2 = IIf( x > (lastx - Daysback) AND BarIndex() < Lastx, y-
> width2 ,
> > Null ) ;
> >
> > SDColor2 = ParamColor("2 SD Color", colorCycle );
> > SDStyle2 = ParamStyle("2 SD Style");
> >
> > Plot( SDU2 , "Upper Lin Reg", SDColor2,SDStyle2 );
> > Plot( SDL2 , "Lower Lin Reg", SDColor2,SDStyle2 );
> >
> > // ============================ End Indicator Code
> > ==============================================================
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso"
> <ajf1111@xxxx>
> > wrote:
> > > Jim,
> > >
> > > What is this:
> > > (Linear
> > > > Regression Index - LR Channel)
> > > Do you have formula ?
> > >
> > > Anthony
> > > ----- Original Message -----
> > > From: jnk1997
> > > To: amibroker@xxxxxxxxxxxxxxx
> > > Sent: Monday, March 21, 2005 3:47 PM
> > > Subject: [amibroker] Re: Help with AFL Formula Please!
> > >
> > >
> > >
> > > Is there no one willing to translate this into AFL?
> > > Thanks in advance
> > > JIm
> > >
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "jnk1997"
<jnk1997@xxxx>
> wrote:
> > > >
> > > > Hello,
> > > >
> > > > I would like to add the following condition to an AFL
buy
> > formula:
> > > > Can someone translate this into AFL?
> > > >
> > > >
> > > > AND 60 day slope of close (LR) is above 0
> > > > AND low (close price) is near bottom (within 10%) LRI
(60)
> > (Linear
> > > > Regression Index - LR Channel)
> > > >
> > > > Thanks
> > > > Jim
> > >
> > >
> > >
> > >
> > >
> > > Please note that this group is for discussion between
users
> only.
> > >
> > > To get support from AmiBroker please send an e-mail
directly
> to
> > > SUPPORT {at} amibroker.com
> > >
> > > For other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
> > >
> > >
> > >
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