[amibroker] New, fixed TC2000/TCNet/TC2005 data plugin

["Tomasz Janeczko" <amibroker@xxxxxx>]

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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