I want the code to randomize the rows and present each row for 10 times
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Bhagya Lakshmi Marella
on 24 Aug 2019
Edited: Walter Roberson
on 24 Aug 2019
I want the code to randomize the rows and present the stimulus by taking the each row values for 10 times. Here is the code that I have written.
Decentration = [0, 0.5; 0, 0; 0, -0.5; -0.5,0; 0.5, 0];
trial = 10;
for i = 1:trial;
for iter= 1:length(Decentration);
Decentration = Shuffle(Decentration, 2);
XDecentration = Decentration(:,1);
YDecentration = Decentration(:,2);
this presents the stimulus for 50 times but in a different proportion.
Please suggest a code for presenting each row of Decentation to be selected 10 times.
1 Comment
KALYAN ACHARJYA
on 24 Aug 2019
Can you explain more?
You have Decentration = [0, 0.5; 0, 0; 0, -0.5; -0.5,0; 0.5, 0]; data,
you expectation from the Decentration matrix data?
Accepted Answer
Walter Roberson
on 24 Aug 2019
Decentration = [0, 0.5; 0, 0; 0, -0.5; -0.5,0; 0.5, 0];
trial = 10;
n = size(Decentration, 1);
idx = repmat(1:n, 1, trial);
order = randperm(size(idx,2));
randrows = Decentration(order,:);
XDecentration = randrows(:,1);
YDecentration = randrows(:2);
This code will present each row exactly trial times, but not in groups. For example, the second row might happen to occur twice in the first 10 stimuli. Or occur 10 times even (though that is not likely)
This is not the code to present each stimuli exactly once per trial: it is code that preserves the correct portions of entries over the entire experiment but not in the short term.
2 Comments
Walter Roberson
on 24 Aug 2019
Edited: Walter Roberson
on 24 Aug 2019
randrows = Decentration(idx(order),:);
More Answers (2)
KALYAN ACHARJYA
on 24 Aug 2019
Edited: KALYAN ACHARJYA
on 24 Aug 2019
Is this?
decentration = [0, 0.5; 0, 0; 0, -0.5; -0.5,0; 0.5, 0];
random_data=decentration(randperm(size(decentration, 1)),:);
[rows colm]=size(random_data);
trial = 10;
decentration_data=cell(rows,trial);
for i=1:rows
for j=1:trial
decentration_data{i,j}=random_data(i,:);
% I assume you have some process here, like apply stimulus to respective rows
end
end
5 Comments
KALYAN ACHARJYA
on 24 Aug 2019
Edited: KALYAN ACHARJYA
on 24 Aug 2019
trial=randi(10);
% This generages the random trial number (maximum 10), change it accordingly
Like
trial=randi(maximum_allowable_trail_number);
%....................^^ enter any max number here
Check here examples
>> trail=randi(20)
trail =
16
>> trail=randi(20)
trail =
7
>> trail=randi(20)
trail =
11
Good Wishes!
Bruno Luong
on 24 Aug 2019
Edited: Bruno Luong
on 24 Aug 2019
The array B of the below has exactly 10 times each row of A in random order:
m = size(A,1);
B = A(mod(randperm(10*m),m)+1,:);
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