Moving Stimuli in E-prime

[David McFarlane]

Actually, it doesn't even have to be a Slide sub-object.  You can 
manipulate the position of any visual object (e.g., TextDisplay, 
ImageDisplay, MovieDisplay) by using attribute references for its X & Y 
properties on the Frame tab -- assuming, of course, that its Width & 
Height values make sense.

-- David McFarlane


David McFarlane wrote:
> A couple thoughts just to point you in some direction.  First, look at 
> the Samples area of the PST website, you should find some examples of 
> how to animate stimuli there.  Second, try just changing the X & Y 
> properties of a Slide sub-object. E.g., put a SlideText sub-object onto 
> a Slide, open the Property Pages for the SlideText object, and put 
> [StimX] and [StimY] for the X & Y properties.  Now you may manipulate 
> the StimX & StimY attributes either using a List or using c.SetAttrib in 
> inline code.  (This works for simple animations, but for fancier things 
> you might have to resort to Canvas programming; see the appropriate 
> topics in the E-Basic Help facility).
> 
> Finally, I have a feeling this sort of thing has been answered before 
> (maybe even by me, but I am away from the machine where I keep my 
> E-Prime FAQ).  So search the Group and the PST User Forum using terms 
> like "animate".  Good luck.
> 
> -----
> David McFarlane
> E-Prime training online: 
> http://psychology.msu.edu/Workshops_Courses/eprime.aspx
> Twitter:  @EPrimeMaster (twitter.com/EPrimeMaster)
> 
> /-----------
> Stock reminder:  1) I do not work for PST.  2) PST's trained staff take 
> any and all questions at 
> http://support.pstnet.com/e%2Dprime/support/login.asp , and they strive 
> to respond to all requests in 24-48 hours, so make full use of it.  3) 
> In addition, PST offers several instructional videos on their YouTube 
> channel (http://www.youtube.com/user/PSTNET ).  4) If you do get an 
> answer from PST staff, please extend the courtesy of posting their reply 
> back here for the sake of others.
> \-----------
> 
> 
> Alice Cai wrote:
>> Hi,
>>
>> I have a question regarding my experiment design. I would like to 
>> create a moving stimuli where participants decide whether the box is 
>> moving vertically or horizontally. I know that I can use different 
>> slides changing at 50 ms. per slide with different locations for the 
>> box (left, middle, right) but the problem is I will need to create a 
>> lot of slides and the E-prime program runs out of memory space.
>>
>> Is there any way to create just three slides, and have E-prime repeat 
>> these three slides until participants give a response? And then the 
>> experiment will jump to the next trial with three more slides?
>>
>> Any help will be greatly appreciated! Thank you!

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