Re: [amibroker] Linear Regression lines compressing the charts?, AmiBroker Email List Archive

Graham,

Thank you

Where would you suggest I add it in this formula? I have tried adding it in different locations but keep getting syntax errors

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 ==============================================================

Mark

From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Graham
Sent: Friday, July 22, 2005 6:37 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Linear Regression lines compressing the charts?

try adding
+stylenorescale
to the plot of linreg line
On 7/22/05, Mark Keitel <mkeitel@xxxxxxxxxxxxxxx> wrote:
>
>
> I was curious why when I place a set of linear regression lines on the
> candle-stick charts it compresses the candles and the whole chart making it
> look different when there were no lines there
>
>
>
> Took the same line configurations from Telechart2005 where it did not do
> this to the chart
>
>
>
> Was curious as to why this may happen and if there is s fix for it?
>
>
>
> Thank you
>
>
>
> Mark
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--
Cheers
Graham
AB-Write AFL Writing Service
http://e-wire.net.au/~eb_kavan/ab_write.htm