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Hi,
I'm anticipating a similar situation to what you describe in the not to distant future although I probably will not be using Excel as the database. I was considering using ODBC and Acess as the DB. I have not done this yet so I don't know the details of an ODBC implementation. There is an ODBC plugin for AB [http://www.amibroker.com/odbc.html] and the VBA object model supports OBDC.
Other options I'm considering and which you may want to look into are:
Static variables, Osaka plugin, and Berkeley DB [http://www.oracle.com/database/berkeley-db/db/index.html].
I have not yet implemented any of these methods they are just the options I have considered based on searching this forum for possible solutions to the issue of database functionality for data that is not OHLCVOI.
Regards,
Ray
--- In amibroker@xxxxxxxxxxxxxxx, "amiespresso" <w2jchen@xxx> wrote:
>
>
> Hello folks,
>
>
>
> I've been searching for a solution for quite a while and explored all
> what I could get, now I feel it's time to ask for help after enough
> homework done with no luck...
>
>
>
> To put it simple, I'd like to have AB exchange data back and forth with
> an OPENED Excel file. Is it all possible?
>
>
>
> To illustrate it more, I need a bridge b/w AB and Excel so that AB could
> exchange data with Excel using Scan/Explore, or even during Backtesting
> execution. The tricky part here is - I have the Excel worksheet opened,
> for example, Sheet1 is for AB to dump something there, while Sheet2 has
> my VBA code. And hopefully I still should be able to interact with Excel
> while AB "talking" to THIS Excel instance.
>
>
>
> Here I tried the following:
>
> 1) XLPlugin - It looks like a right solution by moving data thru memory
> copy between AB/XL. However after spending many days on this direction,
> I was blocked by things I couldn't fix without its source code.
> Basically, its sample.xls couldn't execute properly if AA has
> Periodicity set as any non-Daily value. XLCase() doesn't work if for
> example I run Scan/Explore on Hourly bars, which seem so strange. My
> only guess is VB.net changed its RtlMemoryCopy() used by XLPlugin. This
> function now has different signature from VB6, which may break things
> somehow.
>
>
>
> 2) I tried some sample code that uses "Excel.Application"
> syntax. The problem here is that AB will initiate another copy of Excel,
> NOT the one I opened with something loaded already. It's OK to
> create a new sheet, load it with something, save it and close. But I
> need interaction with my current Excel.
>
>
>
> 3) Plain text or CSV file from AB to Excel is straightfoward, but
> it's not capable of doing quick data exchange between AB and Excel.
>
>
>
> Can anybody here to enlighten me with some idea or code if you ever
> faced similar problem and resolved it?
>
>
>
> Your input is much appreciated!
>
>
>
>
>
> P.S. my envrionments
>
> Windows XP and/or Windows 2003 Server Std Edition
>
> Amibroker v5.20
>
> Office Professional Edition 2003
>
> Visual C++ 2005 Redistributable
>
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