Re: [amibroker] Exploration AFL is causing AB to throw and exception

[Nick Busigin <nick@xxxxxxxxx>]

Tomasz,

I think you've nailed the cause of the problem I'm seeing and you've
also improved my understanding of how AFL works.

Thanks very much for an amazing product and also for such first rate
support!!!

Kind regards,
                                   Nick

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On Mon, 5 Mar 2007, Tomasz Janeczko wrote:

> Hello,
> 
> Scalars works fine in AddColumn, at least on my end.
> There should be no problem with using scalars as they are automatically
> upsized to arrays when needed.
> 
> Simple check:
> 
> Filter=1;
> AddColumn(1,"test"); // scalars work fine
> 
> 
> What may have give problems is that when your data consists of unlisted
> symbols that don't have data for range begin and/or end.
> 
> I prepared artificial data that simulates symbol that stopped tradin in 1999
> and when I run your formula with range selected in 2006 it generates exception.
> 
> Workaround is to exclude unlisted symbols from the exploration.
> You may use Tools->Database Purify to detect such symbols
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
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