Re: [amibroker] Tradestation language ??

["Steve" <avalon-ardy@xxxxxxxxxxxxxxx>]

Thanks Tomasz! :)

----- Original Message -----

From: Tomasz Janeczko

To: amibroker@xxxxxxxxxxxxxxx

Sent: Saturday, October 08, 2005 2:09 AM

Subject: Re: [amibroker] Tradestation language ??

Hello,

 

ProjMA[1] is previous value and code

does simply exponential smoothing.

 

This

ProjMA = Mid - (DampFactor * (Mid - ProjMA[1])) ;

 

can be rewritten to:

 

ProjMA = Mid - DampFactor * Mid + DampFactor * ProjMA[ 1 ];

 

and then to:

 

ProjMA = Mid * ( 1 - DampFactor ) + DampFactor * ProjMA[ 1 ];

 

AFL equivalent of such statement is:

 

ProjMA = AMA( Mid, 1 - DampFactor );

 

see http://www.amibroker.com/f?ama

http://www.amibroker.com/f?ama2

 

Entire code:

 

DampFactor = 0.3;

MALength = 5 ;

ProjMA = 0;

Mid = 0;

MAs = 0 ;

Mid = (High + Low)/2 ;

ProjMA = AMA( Mid, 1 - DampFactor );

MAs = MA(Close, MALength) ;

Plot (ProjMA, "ProjMA" ,colorDefault ) ;

Plot (MAs, "Avg", colorYellow ) ;

 

Best regards,
Tomasz Janeczko
amibroker.com

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