Getting different images at the same size

[Michiel Spape]

Hi Gilis,
You seem to consistently come up with odd 'problems'! Anyway, what do you mean, 'download'? Most image search-engines don't specifically search for X pixels (usually a broader range), let alone X visual degrees. 
But I guess that's not really the problem, so, more seriously: what exactly is the problem? You have a slide, you know the size of your images (right click in explorer, go for summary tab, size known, therefore visual degrees can be calculated), you dump the targets and flankers at specific points (X and Y properties), and therefore can fully predict whether they'd be shown at the same distance. I.e., if your pictures are 100 x 100 pixels, and you have three images on one slide, the centre one being the target, just use an attribute to set the Y at 190, 240 and 290 pixels and you know that they appear at exactly those points on the screen, 50 pixels apart from one another (given a resolution of 640 x 480). Am I missing something?

Also, MSPAINT gives pixel-accurate coordinates (to the lower right, if memory serves) for cutting and pasting, should they be too large (at least, I find mspaint to be really convenient for that)
Best,
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: 29 April 2010 10:42
To: E-Prime
Subject: Getting different images at the same size

Hello,

I use different stimuli and flankers in my experiment (JPG files) and
I want the computer to a. download the different stimuli at the same
specific size exactly (e.g., 2 visual degrees), and the same thing for
the  flankers (can be done accurately enough with photoshop-if so, I
will return to it). b. that the distance between flankers and stimuli
will allways be the same (I have flanker above and below the stimuli).
How can it be done?

Regards
Gilis

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