[solved] variables in sketchpad

berlin · January 2014

hi again!

i am wondering how to use variables in a sketchpad. i tried to set a global var in an inline_script (run_phase) and point to it in a sketchpad...no success.

i would like to do following:

create an array and shuffle it like

pic = [
["001.jpg","aaa","bbb","ccc"],
["002.jpg","ddd","eee","fff"]
]

random.shuffle(pic)

and show a random pic in the sketchpad like

draw image 0 0 pic[1][0] scale=1 center=1 show_if="always"

any hints?

thanks,

ben

lvanderlinden · January 2014

Hi Ben,

Inline_script items require Python coding, whereas sketchpad items require OpenSesame coding. You cannot mix the two.

In your case, I think it's best to determine which picture to show in your inline_script item, and to subsequently set this variable for future use in the GUI (i.e., the sketchpad item). Next, you could simply use the square-bracket method in the skechpad item.

So:

In your inline_script:

import random

picList = [
["001.jpg","aaa","bbb","ccc"],
["002.jpg","ddd","eee","fff"]
]

random.shuffle(picList)

# Declare variable:
pic= picList[1][0]

# Set variable for future use in the GUI.
# For more info, see:
# http://osdoc.cogsci.nl/usage/variables-and-conditional-statements/#getting-and-setting-variables-in-inline_script-items
exp.set("pic", pic)

In the sketchpad editor, use the square-bracket method:

draw image 0 0 [pic] scale=1 center=1 show_if="always"

For more information, see:

http://osdoc.cogsci.nl/usage/variables-and-conditional-statements/

Does this help?

Best,

Lotje

berlin · January 2014

cool! works fine! thanks a lot! cheers, ben

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