Randomly assigning colors to texts

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Randomly assigning colors to texts

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mariela	mariela posted 10 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 14, Visits: 25	Dear all, I have another question in regards to my experiment: In my experiment I have 4 blocks of stimuli items. Now I would like to randomly assign 1 of 4 colors to the blocks. I tried to do this by defining a value label and then put the <%value.color_1%> into the elemtnes defining the text: <values > / color_1=noreplace((10,10,0),(0,10,10),(10,0,10),(10,10,10)) </values> <text A> / items = A /color = <%values.color_1%> </text> <text B> / items = B / color = <%values.color_1%> </text> <text C> / items = C /color = <%values.color_1%> </text> <text D> / items = D /color = <%values.color_1%> </text> Unfortunately this is not working. The message list errors tells me that "Expression '<%values.color_A%' is invalid. Expression contains a syntax error." Can you help me with this task? Is it correct to assign colors by using the value-function? Thank you so much in advance!! Tags color random selection
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Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	Your syntax is invalid on multiple levels -- it won't work like that. What you need to do is (1) Set up a <list> for each color channel (R, G, B) (2) Set up proper dependencies between the <lists>, and (3) Set the <text> elements' color via their textcolorblue, textcolorgreen and textcolorred properties: <block myblock> / onblockbegin = [text.mytext.textcolorred=list.r.nextvalue; text.mytext.textcolorgreen=list.g.nextvalue; text.mytext.textcolorblue=list.b.nextvalue] / trials = [1=mytrial] </block> <trial mytrial> / stimulusframes = [1=mytext] / validresponse = (57) </trial> <text mytext> / items = ("R=<%text.mytext.textcolorred%> G=<%text.mytext.textcolorgreen%> B=<%text.mytext.textcolorblue%>") </text> <list r> / items = (255, 0) / selectionmode = random </list> <list g> / items = (128, 255) / selectionmode = list.r.currentindex </list> <list b> / items = (0, 128) / selectionmode = list.r.currentindex </list> The colors in the above example are (255,128,0) and (0, 255, 128).
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mariela	mariela posted 10 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 14, Visits: 25	Thank you very much for your quick reply and syntax! I'm sorry to bother you once again, but as I just started to use Inquisit I am still finding it difficult to apply a generalized syntax to my experiment. Maybe I need to specify my objective a little further - because from your solution, the resulting color is defined by the elements in your list (I hope I didn't get that completely wrong) and I wonder how I can implement your solution into my setup ... So, what I'd like to do is: I have four sets of items describing a certain objects: Object 1 - described by 6 items (e.g. object 1 is yellow, object 1 is warm, ...) Object 2 - described by 6 items Object 3 - described by 6 items Object 4 - described by 6 items No I have defined a trial for each object with a timeout. In my final block I defined that 28 items should be randomly selected from the 4 object trials (I used the noreplace-command). In addition I now would like to randomly assign text colors to the different object trials. E.g. all items for object 1 are displayed in one color, all items for object 2 are displayed in a different color etc. And I'd like to define the possible colors that can be used. My syntax currently looks like this: <item object1> / 1 = "object 1 is yellow" / 2 = "object 1 is warm" / 3 = "object 1 is far away" </item> <item object2> / 1 = "object 2 is blue" / 2 = "object 2 is cold" / 3 = "object 2 is close" </item> <text object1> / items = object1 </text> <text object2> / items = object2 </text> <trial object1> / stimulusframes = [1=object1] / timeout = 2000 </trial> <trial object2> / stimulusframes = [1=object2] / timeout = 2000 </trial> <block objects> / trials = [1-6 = noreplace(object1, object2)] </block> Does your syntax still apply in this situation or do I need to do something different? Thank you for your help, I really really appreciate it.
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Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	> Does your syntax still apply in this situation or do I need to do something different? Yes it does, it's the same thing: <block myblock> / onblockbegin = [text.object1.textcolorred=list.r.nextvalue; text.object1.textcolorgreen=list.g.nextvalue; text.object1.textcolorblue=list.b.nextvalue] / onblockbegin = [text.object2.textcolorred=list.r.nextvalue; text.object2.textcolorgreen=list.g.nextvalue; text.object2.textcolorblue=list.b.nextvalue] / trials = [1-4=noreplace(object1trial, object2trial)] </block> <trial object1trial> / stimulusframes = [1=object1] / validresponse = (57) </trial> <text object1> / items = object1items </text> <item object1items> / 1 = "Hi, I'm Object1. My color is R=<%text.object1.textcolorred%> G=<%text.object1.textcolorgreen%> B=<%text.object1.textcolorblue%>." / 2 = "Hey, it's Object1. The color is R=<%text.object1.textcolorred%> G=<%text.object1.textcolorgreen%> B=<%text.object1.textcolorblue%>." </item> <trial object2trial> / stimulusframes = [1=object2] / validresponse = (57) </trial> <text object2> / items = object2items </text> <item object2items> / 1 = "Me, I'm Object2. The color is R=<%text.object2.textcolorred%> G=<%text.object2.textcolorgreen%> B=<%text.object2.textcolorblue%>." / 2 = "Hello, it's Object2 speaking. Observe my color R=<%text.object2.textcolorred%> G=<%text.object2.textcolorgreen%> B=<%text.object2.textcolorblue%>." </item> <list r> / items = (255, 0) / selectionmode = random / selectionrate = always </list> <list g> / items = (128, 255) / selectionmode = list.r.currentindex / selectionrate = always </list> <list b> / items = (0, 128) / selectionmode = list.r.currentindex / selectionrate = always </list>
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mariela	mariela posted 10 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 14, Visits: 25	Thank you thank you thank you thank you - it works excellent!!!
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