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Hi dbirru,
I'm confused by your procedure as it is certainly not what I do.
After updating your TC2005 data, why do you "run scan over the whole database"? If you use the F5 key or
click View--> Refresh or simply close and reopen AB, you will have updated
the AB database. The TC data plug in makes it unnecessary to retrieve
anything from the TC data base, except when you want to bring in new tickers
that have been added since you set up your AB TC data folder. One of the
joys of AB is that it reads the data directly from the TC database with it's
plug in so there is no "importing" data into AB with TC2005.
My setup and procedure. Under the Database Settings (File -->
Database settings), the Data source is the TC2000/TCNet Plugin and Local data
storage is set to Enable. After updating in the TC program, I click F5 and
the data is now updated in AB -- takes about 3 seconds on one fast machine,
about 6 seconds on a second slower machine.
When you do run scans or explorations, the first run will be slower as it
loads data into the cache, there after the same scan or exploration will run
faster. To learn a bit more about how AB handles external data (like TC)
read the Help Tutorial section on Database Management, Understanding AmiBroker
database concepts.
Peace and Justice --- Patrick
----- Original Message -----
Sent: Friday, June 24, 2005 6:36 PM
Subject: [amibroker] Re: New, fixed
TC2000/TCNet/TC2005 data plugin
Thanks for this. The problem is fixed.
However, I am
not able to see the difference b/n this and the old one.
I use EOD
data. Is this update for realtime/intra-day date?
What I have
been looking for is a way to reduce the time that takes to
convert the
TC2005 data to the native database. Normally, I first
dawnload using
TC2005. I then start AB and run scan over the whole
databse. I then close
AB so that the data is saved in AB native
database. I then restart AB.
Change the database to local. Then
continue my backtesting. This whole
process takes about 15-20minutes.
--- In
amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
<amibroker@xxxx>
wrote:
> Hello,
>
> A new, fixed
TC2000/TCNet/TC2005 data plugin version 1.4.3 is
available now
> for
download from:
> http://www.amibroker.com/bin/TC2K.dll
>
> Installation:
> Download and copy to Plugins subfolder. Please
OVERWRITE old copy
> ( if you keep two copies then older one will be
loaded ).
>
> Changes:
> + fixed crash occuring when
"Number of Bars to Load" was set to 4000
or higher (15
years)
> and given symbol had longer history in TC2000
(mainly indices)
>
> + workaround for TCDK problem of not
returning entire history available:
> if "number of bars"
specified by the user is 5000 or higher than
TCDK is
>
queried with size = 0, which in TCDK-speak means "all quotes".
> To get all quotes set "Number of bars" to value equal or
higher
than 5000
> (note that some indices
(Sp-500) have about 11000 bars)
> To get better performance
specify LESS than 5000 bars (19 years
worth of data)
>
> +
View->Refresh All menu causes re-initialization of TCDK and
getting
updated quotes for today
> (even during trading
session)
>
>
> How to get new quotes during trading
session and after close:
> Now in order to get fresh quotes you need to
choose View->Refresh All
> menu from AMiBroker after running download
in TC2000.
>
> In order to get fresh quotes the plugin needs to
internally restart
TC2000 API (TCDK),
> it is done automatically by
the plugin but takes about 5-15 seconds
(depending on machine
speed)
>
> This is due to the design of TC2000 API that feeds all
external
applications
> with old quotes until entire API (TCDK) is
restarted, which is
unfortunatelly long process.
>
> By the
way, people looking for EOD data source for extensive data
mining
>
should take a look at Quotes Plus (QP2) which is several times
faster and
less
> resource consuming than TC2000.
> (there is a link to QP2
on AmiBroker page)
>
>
> Best regards,
> Tomasz
Janeczko
> amibroker.com
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Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
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For other support material please check also:
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