display slide image from an array

[Michiel Spape]

Hi,
Your code is full of errors, it seems! I bet you anything this code didn't work before, actually...

" if slide1.cresp = "m"                          'when correct response
is on the right
imageright = card(x)
c.setattrib "imageR", imageright"
end if"

1. I assume your slide1 has imagedisplay with filename [imageR], yes? What happens with incorrect responses
2. Why is there a quotation mark after imageright?
3. Why do you refer to .cresp? Could be you mean this, but I often get students who get confused between the difference between .resp, .cresp and allowable... 

Anyway, Make a blank image, (with MSPAINT!), save it as blank.bmp, then do:

if slide1.cresp = "m"       'if cresp is m
	c.setattrib "imageR", card(random(1,52)) 'no need for imageright
else
	c.SetAttrib "imageR", "blank.bmp"
end if"

Always specify an image, even if it is blank - that way, you can ensure the timing is the same :) Also, be prepared for the inevitable unexpected response (i.e. use else and such).
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 Victor
Sent: 01 March 2010 12:37
To: E-Prime
Subject: display slide image from an array

Hi,

I have a feedback slide that I want to display a random image from an
array but I get the error 'filename on imagedisplay has not been set'
and I do not understand why.

I have a list with cards

card(1) = "aceclubs" and so on..

Before the feedback slide I have

dim x as integer
x = random(1,52)

if slide1.cresp = "m"                          'when correct response
is on the right
imageright = card(x)
c.setattrib "imageR", imageright"
end if

I have used this sort of code before and it has always worked so I am
confused as to why it doesnt work now. Any help would be appreciated,
thanks,

Victor

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