Hi,

 

Backfill means "filling your chart" with historical data for a specific
period. All you can do with DDE is to get CURRENT realtime quotes, store
them and good. If you switch off your computer on Monday, turn it on on
Tuesday, you won't have data for Monday, no way to get it from your DDE
source/interface.

 

However, you can import historical quotes MANUALLY if your server has
historical data available in ASCII format, e.g., and you can download them.
With your provider, this seems to be the case, but it's quite a hassle
updating the database manually if trading say, 1min charts.

 

An elegant solution is the COM interface, that several providers, e.g.
Esignal offer. AB has a dedicated Plug-In for each provider in the list.
Backfilling  data with the COM/RT-plugin is not a problem, however, it'll
require you to spend a little money on a monthly base.

 

Have a nice weekend,

 

Matthias

 

From: [email protected] [mailto:[email protected]] On Behalf
Of bharat
Sent: Freitag, 23. Juli 2010 19:53
To: [email protected]
Subject: [amibroker] Re: Help with DDE connections using TOS

 

  

Dear Matthias

You have written that no backfill available via DDE.But does it apply to
server which has data available?I think server of TBMX has 14 years data
stored on it,because I am able to draw chart for 14 yeas data. 

--- In [email protected] <mailto:amibroker%40yahoogroups.com> ,
"Matthias K." <meridian...@...> wrote:
>
> Hi,
> 
> 
> 
> Did you try putting a symbol into "realtime quote" list by "type in
symbol"
> (use the symbol's name of your DDE provider). Other than that, try to look
> up in the documentation of TOC, not sure what it stands for/where it comes
> from. NO backfill available via DDE.
> 
> 
> 
> Matthias
> 
> 
> 
> 
> 
> From: [email protected] <mailto:amibroker%40yahoogroups.com>
[mailto:[email protected] <mailto:amibroker%40yahoogroups.com> ] On
Behalf
> Of bar607
> Sent: Donnerstag, 22. Juli 2010 23:11
> To: [email protected] <mailto:amibroker%40yahoogroups.com> 
> Subject: [amibroker] Help with DDE connections using TOS
> 
> 
> 
> 
> 
> Hi,
> 
> I configured the DDE connection according to this post with people that
have
> successful done it 
> http://finance.groups.yahoo.com/group/amibroker/message/149673
> 
> I did exactly as it stated but I still can NOT connect through DDE.
> 
> Can anyone help me?
> 
> Thanks,
> Pin
>



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