Can you do attribute referencing with colon notation for objects within slides?

[Adam Osth]

Wow! First, it's a huge relief to know that I'm not crazy and that this is
an actual problem. Second, thanks for going through so much effort to both
identify the problem and find a potential solution! I greatly appreciate it.

About your solution, though. My framework is a little more complicated - I
actually already have a main categories list with 16 nested lists, all
containing 9 exemplars of each category. The individual categories have the
[Reference] attribute with the filename. So it goes like this:

Categories list *contains*
- nested: Relatives   w/ Reference attribute
- nested: Bodyparts  w/ Reference attribute
- nested: Clothing   w/ Reference attribute *contains*
     - Dress.wav
     - Skirt.wav
     - Shirt.wav
     - Sweater.wav etc. etc.

So that way, when the program is on level 1, it finds the first category,
then goes through Reference:0, Reference:1, Reference:2 etc. etc. and plays
all the sounds within that first list. Second level does the same for
category #2, and it goes through the lists sequentially.

So I tried your method by nesting the nested category lists within another
list and used colon notation, but the problem is that it never goes beyond a
given level. That is, at level 1 of the proc, [MainReference] finds
Relatives, then finds [Reference:0], chooses the first item on that list,
then repeats it.

So while your method is really good at finding a loophole, I need some way
to exhaust all levels of a nested list without shifting lists. Does that
make any sense?

Thanks again for your help!

Adam



On Tue, Jul 7, 2009 at 10:21 AM, David McFarlane <mcfarla9 at msu.edu> wrote:

>
> Adam,
>
> I may have a workaround for you.  Let's suppose your Reference
> attribute is in a nested list (and if it's not, then it really should
> be).  For the sake of discussion, let's call your main list
> TrialList, the nested list NestList1, and your slide
> StimSlide.  NestList1 contains the attribute (column) Reference,
> which you want to use with colon syntax in a SoundOut sub-object on
> StimSlide.
>
> So, simply add another attribute (column) to TrialList, let's call
> that MainReference.  Then use your colon syntax to have MainReference
> refer back to Reference in NestList1, e.g., [Reference:0].  Now in
> your slide sub-object, just use a straight reference to
> TrialList:  [MainReference].  So you do not use any colon syntax in
> the slide sub-object -- the slide sub-object refers to MainReference
> in TrialList, which in turn refers (via colon syntax) to Reference in
> NestList1.  Whew!
>
> I tried this and got no errors.  So please give this a try and let us
> know how it goes.
>
> Thank you for an interesting and challenging question,
> -- David McFarlane, Professional Faultfinder
>
>
> >
>

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