[open] set (global?) variable for center of circle

bbaribau

hi there,

I'm not sure how to set a variable -- perhaps in an inline script? -- for later use in a sketchpad element.

I'm setting up an experiment where I present nine concentric circles as a target. In the introduction sketchpad element, I give an example target, but I've been moving them around a lot while I work on the element's setup. Rather than physically moving all nine circles, or manually changing the script nine times, I'd like to set a (global?) variable at the start of the experiment for the x and y coordinates of the center for all nine circles, then feed it to the "draw circle" command.

I'm very familiar with MATLAB but new to opensesame/python.

Any pointers on the best way to do this?

Thanks!

-b

sebastiaan

Hi,

In short, the easiest way to set variables is with the loop item, after which you can refer to them with the square-bracket notation: [my_variable_name].

However, I would recommend first walking through one of the basic tutorials, in which this principle is shown and explained in detail:

• http://osdoc.cogsci.nl/tutorials/step-by-step-tutorial/

Cheers,
Sebastiaan