Combining shapes into one object

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Combining shapes into one object

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piotr_styrkowiec	piotr_styrkowiec posted 10 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 39, Visits: 183	How to combine many shapes in one object without listing them all in the trial stimulustimes attribute?This is I have 6 lines (thin rectangles; 3 vertical, 3 horizontal) and these lines create a grid when put together.So in every trial when I want this grid to be presented on the screen I need to write something like this: / stimulustimes = [1=line_1, line_2, line_3, line_4 line_5, line_6; 500=......] Is there a possibility to combine these lines into one object 'grid' so I can put in every trial just this one element? like this: / stimulustimes = [1= grid; 500=.....] And something perhaps related: how to create list of shapes? Will be very grateful for help. Piotr
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Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	No, you cannot combine <shape>s (or other stimuli) into a single object. <list> elements wouldn't help here either. Every object you want to have displayed by a <trial> must be in its /stimulustimes or -frames. To make a <list> of shape elements, you do <list shapelist> / items = (shape.a, shape.b, shape.c, ...) ... </list> <shape a> ... </shape> ... <shape c> ... </shape> ... as you would for any other stimulus element
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Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	What you can do is insert the stimuli in question into the trial's frames once at the beginning of the <expt> or <block>: <block myblock> / onblockbegin = [trial.mytrial.setstimulustime(shape.h,0); trial.mytrial.insertstimulustime(shape.v,0)] / trials = [1-4=mytrial] </block> <trial mytrial> / stimulustimes = [500=mytext] / validresponse = (57) </trial> <text mytext> / items = ("A", "B", "C", "D") </text> <shape h> / shape = rectangle / size = (50%, 2px) </shape> <shape v> / shape = rectangle / size = (2px, 50%) </shape> They will persist as long as you don't call resetstimulusframes().
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piotr_styrkowiec	piotr_styrkowiec posted 10 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 39, Visits: 183	Thank you for your help. Will try to do what you suggest. Piotr
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