Semi random song play

[Darina]

Randomly selecting trials from a list totally skipped my mind but yes
I see how that is done. Songs 3 and 4 are now different and all
possible combinations are included. Thank you very much for your
help!

On Jun 6, 3:17 am, "Michiel Sovijarvi-Spape" <msp... at cognitology.eu>
wrote:
> Hi,
> "how can I randomly select two trials from the list of 4?"
> Well, you should be able to know how to select fewer than the full list of
> trials from a list after going through the barest minimum of the getting
> started guide to E-Prime.
>
> "Songs 3 and 4 are different!"
> That's what you asked, no? Or do you mean, "only songs 3 and 4 need to be
> different, not the rest". That'd be a bit uncommon (usually people want to
> avoid repetition in general, if they do this restricted randomisation
> thing), but sure, then there are a few combinations which I omitted. Of
> course, you could just extend the list by including:
> [Songs:1] [Songs:1] [Songs:2] [Songs:3] [Songs:2] [Songs:3]
> [Songs:1] [Songs:1] [Songs:2] [Songs:3] [Songs:3] [Songs:2]
> [Songs:1] [Songs:2] [Songs:2] [Songs:1] [Songs:3] [Songs:3]
> [Songs:1] [Songs:2] [Songs:2] [Songs:3] [Songs:1] [Songs:3]
> [Songs:1] [Songs:2] [Songs:2] [Songs:3] [Songs:3] [Songs:1]
> ...
> Not exactly sure whether I now included all different combinations, I really
> suggest you figure that one out yourself. Indeed, there are only that many
> combinations in total, so you could just write them all out and delete the
> ones that your type of randomisation doesn't allow. Sure, takes a while, but
> so does writing emails, asking for help, and indeed replying to them. Hope
> this helps anyway.
> Best,
> Michiel
>
>
>
>
>
>
>
> -----Original Message-----
> From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf
>
> Of Darina
> Sent: 05 June 2012 21:45
> To: E-Prime
> Subject: Re: Semi random song play
>
> Songs 3 and 4 are different! Since I only need the 3 songs to each play
> twice, how can I randomly select two trials from the list of 4? I imagine
> this requires an in-line code?
>
> Thank you for any help!
>
> On Jun 5, 2:22 pm, Darina <dashka.... at gmail.com> wrote:
> > That works, thank you very much!
>
> > On Jun 5, 2:41 am, "Michiel Sovijarvi-Spape" <msp... at cognitology.eu>
> > wrote:
>
> > > Hi,
> > > Presumably, there are different, better methods. My first idea is to
> > > use a nested list, colon syntax, and some consideration of the
> > > possible different combinations. No inline code necessary.
> > > 1. Create a list. Within there, make a nested list, say "songs",
> > > featuring all the songs you have, using one attribute, say, "Songs".
> > > Set the nested list to randomize.
> > > 2. Within the trial procedure, have 6 slides (or whatever), one
> > > after another, (say slide1, slide2, slide3..slide6) with the sounds
> > > (as, i think, sounddevice sub-objects) playing as you see fit. More
> > > importantly, set the filename of each of the sounds to be [Song1],
> [Song2], .. [Song6].
> > > 3. Again, in the list object (not the nested one), make 6 attributes
> > > with "Song1", "Song2".. "Song6". Enter, in the triallist, the
> > > following trials (one column for each attribute):
> > > [Songs:1] [Songs:2] [Songs:3] [Songs:1] [Songs:2] [Songs:3]
> > > [Songs:1] [Songs:2] [Songs:3] [Songs:1] [Songs:3] [Songs:2]
> > > [Songs:1] [Songs:2] [Songs:3] [Songs:2] [Songs:3] [Songs:1]
> > > [Songs:1] [Songs:2] [Songs:3] [Songs:2] [Songs:1] [Songs:3] ...
> > > that's it, works.
> > > You see, WHICH song is the first in the list of songs will be
> > > randomised, so the first 3 songs only need to be different ones.
> > > Thus, in trial 1, SOME song is taken from the full list of songs,
> > > that is, the first in the randomised nested list. The second song
> > > will be a different one, and the third another different one. The
> > > only pre-requisite for the fourth song is that it is either the
> > > first or second of the played songs, and so on - showing that there are,
> in fact, only 4 combinations possible.
>
> > > So, may sound like an awkward way of going about these things, but I
> > > think it's actually quite elegant.
> > > Best,
> > > Michiel
>
> > > -----Original Message-----
> > > From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On
> > > Behalf
>
> > > Of Darina
> > > Sent: 04 June 2012 18:13
> > > To: E-Prime
> > > Subject: Semi random song play
>
> > > Hello, I am new to E-Prime so I do not know much about coding.
> > > I need to play 3 songs twice in random order. However, I need the
> > > third and forth song to be different. How can I do this?
>
> > > Thank you for any help!
>
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