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Re: [amibroker] AmiBroker 5.24.0 BETA released .Static array variables implemented!



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Tomasz,

I would welcome your idea of a "nosync" flag.  

Some of the uses I have for static arrays involve data that has no relation to time stamps. Other uses are for saving temporary results of calculations that are only needed once per parameter change on very large arrays (200K) for special case backtesting.  The backtests are on one security in indicator mode with real time feed off.  Speed is important as it can take 20-30 seconds for one AFL pass today without static arrays.  It will take a while before processor speeds increase 30x.

In these cases the extra overhead of matching time stamps would not be needed, and in the first case might actually create problems.

Best regards,
Dennis

On Mar 7, 2009, at 4:08 AM, Tomasz Janeczko wrote:

Hello,
 
In that case it will work because timestamps are in sync.
 
In the future I may consider adding "nosync" flag, that will skip any timestamp matching logic for such simple scenarios.
 
Generally speaking static array variables are designed to "do their best" to synchronize to selected symbol even if there is no match.

Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: J. Biran
Sent: Saturday, March 07, 2009 8:08 AM
Subject: RE: [amibroker] AmiBroker 5.24.0 BETA released .Static array variables implemented!

Hi TJ,

Would you care to clarify comment d) below in the case of trying to import output of one indicator from one pane to a second pane of same symbol and same interval when the interval is Range bars.

Will it not work in that case?

 

--

Joseph Biran
____________________________________________

 

From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Tomasz Janeczko
Sent: Friday, March 06, 2009 6:59 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] AmiBroker 5.24.0 BETA released •Static array variables implemented! (do NOT work well for tick/volume intervals!)

 

Hello,
 
AmiBroker 5.24.0 BETA is released now:
 
This is somewhat special beta because it contains only one fix and introduces only one new feature: array static variables.
I decided to release this feature "alone" because the static variable code has been completely rewritten, so in case of any issues, it would be easy to revert to 5.23.
 
Best regards,
Tomasz Janeczko
amibroker.com

d) static array variables do not work well for non-time based intervals (tick/n-volume/n-tick) because timestamps in those intervals
may not be unique (i.e. several bars may have same time stamp), so time synchronization is not reliable.

 





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