Trying to use a while loop to create experimental conditions?

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Hello everyone,
I am ultra new to Matlab. I am trying to create a Psychology experiment that requires 6 different random combinations of "target present" and "target absent". Thus I am using 1's to represent "target present" and 2's to represent "target absent". I am trying to use the following code to execute the function "randi(2,20,1)" 6 times by using a while loop to fill in the matrix T (column by column). However, I cannot figure out how to get the code right. Any help would be appreciated.
Thanks so much,
T = [(zeros(20,1))]
ii=1
while ii < 6
ii = ii+1
T(ii,1) = randi(2,20,1)
end

Accepted Answer

David Fletcher
David Fletcher on 2 May 2021
Edited: David Fletcher on 2 May 2021
Is this what you are after?
ii=1
while ii <= 6
T(ii,:) = randi(2,1,6);
ii = ii+1;
end
T =
1 1 2 1 2 1
2 1 1 1 2 1
1 2 2 2 2 1
2 2 1 2 1 1
2 2 2 1 2 1
1 1 1 2 1 2

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