576 images in one slide

Tobias tobias.fw at gmail.com
Tue Feb 16 15:56:38 UTC 2010


Okay, I finally managed to solve the problem. I seperated the code in
two inlines, one to define the slide and one to call the slide.
fixation cross now comes between those and there seems to be no error
anymore.

On 13 Feb., 18:39, Tobias <tobias... at gmail.com> wrote:
> Hi,
>
> so thanks to David's hint I could manage to compose a script
> displaying 576 images on one slide. As I use a loop function it is not
> much code, however the processing time is a problem.
> Although the slide is supposed to be displayed for only 200 ms, it's
> duration is about 700-800 ms. I thought about changing the images'
> colour depth and got bitmaps of 144 bytes instead of 1 KB each.
> Unfortunately that didn't change anything.
> I then used pre-release of 1000 ms and (just to test) an empty screen
> of 2000 ms just before each slide. Interestingly, the durationError
> was increased exactly be the pre-release time and onsetDelay was
> constant. This really is a riddle to me.
>
> First of all, the duration didn't seem to be prolonged (by
> appearance). Then, why is the duration not the desired 200 ms if there
> is enough time for pre-release? What makes E-Prime unable to already
> establish the slide?
>
> Maybe you have had similar problems and could help me out.
>
> Best,
> Tobias
>
> On 15 Jan., 18:16, David McFarlane <mcfar... at msu.edu> wrote:
>
> > Tobias,
>
> > >576times inserting sub-objects is indeed too tedious, especially as
> > >copy-paste doesn't work in e-prime for filename or positionin the
> > >object settings.
>
> > >If I change the code, I can only do that for the e-run script file,
> > >right? If I do change something here I won't see that anywhere in a
> > >visual form like in the main program of e-prime, if I'm not wrong.
> > >This might make it hard to check if it is running as I want.
>
> > No, no, no.  Sorry if that was not clear.  Look at the generated
> > script just to figure out how things get done.  Then go back to
> > E-Studio and do your editing & exploration in inline script there.  I
> > would make one simple demo program to generate working code that I
> > can examine, and then a separate demo program where I make my changes
> > (and mistakes!).
>
> > That said, here is another hint.  You have not said whether you are
> > stuck with EP1 or EP2.  But if you have access to good old EP1, it is
> > much, much easier to explore script in E-Run there.  As you
> > recognize, what you change in E-Run will not propogate back to
> > E-Studio, but in this case you just use E-Run edits to explore &
> > learn, then apply (possibly by copy & paste) what you learn with
> > E-Run back to inline script in E-Studio.
>
> > Hope that makes things clearer.
>
> > -- David McFarlane, Professional Faultfinder

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