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Re: [amibroker] Re: Scoring and Ranking System example using ABtool



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From: "Fred" <fctonetti@xxxxxxxxx>
> I understand the functionality of Table Export/Import, but for 
> example in running an AA back test or optimization across multiple 
> symbols my understanding is that AB clears the contents of virtually 
> everything between one symbol and the next and it would be usefull to 
> be able to some how have persistancy in tables as opposed to having 
> to export them at the end of processing for one sysmbol and then 
> importing them again at the beginning of processing of the next 
> symbol.

Need to think a while on this... 
Please give me a small practical example to follow.
 
> On another topic, I know this can be done externally using OLE 
> Automation etc., but it would be usefull to be able to get at all 
> the "settings" information that AA has, a lot of which can not be 
> gotten with a STATUS("xxx") type command from within an AA.  

Got it, will see.

UM


> --- In amibroker@xxxxxxxxxxxxxxx, uenal.mutlu@xxxx wrote:
> > Hi Fred,
> > the functions xxTableExportBinary(), xxTableImportBinary(), and
> > their ASCII versions xxTableExport() and the new xxTableImport()
> > are possibilities for making the tables persistent: just save 
> before quitting
> > and load after starting. This also could be automated. If there is 
> demand
> > for this le me know.
> > As stated in my Todo list there is another point with an extension 
> DB.
> > The persistent variables will be automatically saved/loaded. 
> Unfortunately
> > they are delayed due to the Sort bug introduced in the last version.
> > FYI: a bugfixed version was uploaded.
> > UM
> > 
> > 
> > ----- Original Message ----- 
> > From: "Fred" <fctonetti@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Tuesday, May 13, 2003 6:32 PM
> > Subject: [amibroker] Re: Scoring and Ranking System example using 
> ABtool
> > 
> > 
> > > Uenal,
> > > 
> > > Is the implication here that things like ABTool tables could be 
> made 
> > > to be persistant ?
> > > 
> > > --- In amibroker@xxxxxxxxxxxxxxx, uenal.mutlu@xxxx wrote:
> > > > Here is a sample code on how to use the Ticker and Table
> > > > functions of the ABtool plugin to realize Systems based on 
> > > > Scoring and Ranking. 
> > > > Attached is the AFL program code ("xx_Sorting_And_Ranking.afl")
> > > > 
> > > > 
> > > > Some other info on ABtool:
> > > > 
> > > > - ABtool documentation bug:
> > > >   TableSortDefDeleteAll() was renamed to TableSortDefDelAll()
> > > >   Just forgot to update the dox :-( In the next version it will 
> be 
> > > fixed.
> > > > 
> > > > - Persistent AFL variables:
> > > >   The next version of ABtool will have global and persistent 
> AFL 
> > > >   variables implemented. Persistent means "always available"; 
> ie. 
> > > they 
> > > >   got saved and restored automatically. The user can save 
> copies of 
> > > >   single number variables and string variables in persistent 
> area, 
> > > and 
> > > >   recall them whenever he/she likes. Each variable is 
> identified by 
> > > a 
> > > >   unique name the user gives the variable. So, this is like the 
> > > environment
> > > >   variables, but env vars are limited to string type only and 
> are 
> > > limited 
> > > >   by size and the number of envvars by the operating system. 
> The 
> > > persistent 
> > > >   variables don't have any limitations. Put as much vars as you 
> > > like there
> > > >   (also very long strings), and they will be available even 
> after 
> > > restarting 
> > > >   AB or the plugin.  
> > > > 
> > > > I'm just testing it. Till then.
> > > > UM



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