X position

[David McFarlane]

Gilis,

Regarding the ":center" that E-Studio adds to 
your X property:  Ignore it, it does not affect 
the actual position during the run.

Long explanation:  E-Studio adds this just to 
show where *E-Studio* will put the *placeholder* 
for the object when *designing* the program, 
*not* when running the program.  Think about it 
-- You tell EP that you want something to appear 
at [Location].  OK, so where does E-Studio show 
the placeholder for that object?  It has no idea 
what value [Location] will take at run time.  So 
instead it assigns a separate value to use just 
during design time.  And just to demonstrate 
this, try the following:  Take your object with 
the [Location] and drag it anywhere you like on 
the screen, then look at the X property again -- 
you will see that it now says, e.g, 
[Location]:20% (if you dragged it leftward).  So 
now you know how to put an object one place at 
run time, and show its placeholder whereever you like at design time.

-- David McFarlane, Professional Faultfinder


At 5/11/2010 07:09 AM Tuesday, you wrote:
>Hi Gilis,
>1: delete the second stimuli and copy-drag the 
>first stimulus on the procedure to make a copy. 
>The error is, almost certainly, caused by 
>sloppiness :) I have that all the time, anyway! 
>There's many reasons that can cause your slides 
>to be non-identical, and it makes little sense 
>to try see which one. After copying, the two 
>slides should not be noticeably different - just 
>keep changing them and don't forget to debug 
>often to see whether everything is still ok.
>2: Leave the X-Align (do you really want to 
>redefine what constitutes the location?) alone and set X to [Location].
>3: Make sure ALL locations are either defined 
>with percentages or pixels (i.e. without %), but 
>not both! E-Prime will add :center to your 
>attribute - this should not affect it.
>
>Any luck with your other problem, by the way? 
>I'm sorry, but found it too long to read (I 
>imagine the E-Prime support unit wouldn't say such a thing!).
>Cheers,
>Mich
>
>
>Michiel Spapé
>Research Fellow
>Perception & Action group
>University of Nottingham
>School of Psychology
>
>-----Original Message-----
>From: e-prime at googlegroups.com 
>[mailto:e-prime at googlegroups.com] On Behalf Of gilis
>Sent: 11 May 2010 07:20
>To: E-Prime
>Subject: X position
>
>Hi All,
>
>In my Experiment the stimuli appear, technically, twice. The
>participant however is very desirably not to notice that. The issue is
>that I collect one vocal response and one manual response (with the
>mouse) so there are two following slide objects that present the same
>stimuli exactly.
>
>The problem I now facing goes like that: Most of the images I use are
>at the same size and I use flankers above and below them in part of
>the trials. The flankers should always appear above or below the
>center of the image.
>
>Two of the images are too large so I had to move the flankers to the
>left  in oreder of these to appear above the center of it exactly.
>
>I did it by setting an attribute dubbed "Location" in the trial list-
>for all other images its value is "center" and for  these two images I
>set the value to 55%.
>
>In the slide objects that contain the stimuli and the flankers I
>changed the flankers X position only (X and X align, in the sub object
>properties)  by adding [location] to both X and X align. The problem
>is that the program automatically change it to [Location]:center. I
>have tried several times to delete the "center" but for vain because
>then it add it time and again.
>
>What I get in my experiment is that for these two images there is a
>movement and it can be noticed that I'm using to slide objects. The
>first object present the flankers at the [location] and the second at
>the center...Also, although the image is set to allways appear in the
>center from within the sub object properties, it seem to move the same
>way with the flankers.
>
>
>Does any one have anhy idea what may be causing it?

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