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Love the new Quick AFL support! It improved my execution time from
41sec to 25sec for each optimization pass. It will shave hours off
each walkforward step.
The new optimizer is a also a huge improvment and makes walk forward
testing practical.
A couple of questions for you:
Is the full array still passed to a DLL, or just the part of the
array that Quick AFL is using? It looks like the full array. Is
there any way that a dll can tell what part to use/ignore?
Keep up the great work. Ami has taken a giant leap foward in the
last few months.
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx>
wrote:
>
> Hello,
>
> AmiBroker 5.14.0 BETA is released now:
> http://www.amibroker.com/devlog/2008/07/04/amibroker-5140-beta-
released/
>
> CHANGES IN VERSION 5.14.0 (as compared to 5.13.0):
>
> 1.. added support for Quarterly and Yearly intervals in all parts
of the program
> 2.. Changes to drawing made in v5.13 caused improper drawing
lines located PAST the last available quote (trendlines and
pitchforks) when timestamping method was "START TIME of interval".
This is fixed now.
> 3.. Fixed AddSummaryRows so 'onlycols' parameter default (zero)
is applied properly
> 4.. Implemeted "Select all" via Ctrl-A keyboard shortcut for all
list (result list in AA for example)
> 5.. Mouse cursor shape (moving/sizing) reflects the selected
study priority when more than one study exists under mouse position
> 6.. new multiple Volume At Price charts at user-defined points
via new PlotVolumeOverlayA function
> 7.. QuickAFL can now be used in Automatic Analysis (Settings:
General: "Use QuickAFL" - check this box) - this can speed up
explorations, scans and backtests by factor of 2+ if range is less
than "all quotations". More on this:
http://www.amibroker.com/kb/quickafl
> 8.. Range Bars compression now uses TickSize as "1R step".
TickSize defined in the Symbol Information, if its value is zero,
then 1R would be equivalent to 0.01 movement (for backward compat)
> 9.. selecting date in multiple linked charts is now faster
because redraw is not made when selected line in higher compressed
interval remains in place
> 10.. selector line in linked charts works OK now, regardless of
selected time compression timestamping method
> 11.. SetBarsRequired accepts now values -2 in special meaning:
reference ALL bars
> 12.. Sometimes progress bar did not show the name of optimization
engine used. Now it is fixed
> 13.. Status("ActionEx") provides more codes than Status("action")
to detect special executions states
> 14.. Streaming chart update could stall if trend line handle was
clicked in attempt to resize and released in the very same position
(without moving the mouse). Now it is fixed.
> 15.. TimeFrameMode() now supports mode == 4 - which expresses
RANGE bars in TickSize units (as opposed to mode 3 that uses dollars
for backward compatiblity)
> 16.. when display chart timing option is turned on and RT stream
is active the application STATUS BAR now displays TOTAL time for all
charts, it should be BELOW 1 second for RT trading
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
>
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