Append corresponding values to new matrix

Hi guys, I am trying to append accuracy values of the rows that match the statement into a list. In my r matrix there are 28 participants each performing 5 blocks of 120 trials. Per trial (600 in total), I want to store every accuracy value. So for example, when block == 1 and trials == 1, I want to append all 56 corresponding accuracy scores. Is there anyone who can help me out?

r(:,14) = accuracy;

sd = zeros(5,120);

for b = 1:5
    for s = 1:120
        
       if r(:,3) == b & r(:,4) == s
                     
           sd = accuracy(s,1)
           
       end
    end   
end 

Answer 1

[AMIT POTE]

Hey @MadjeKoe.

You can append new values to a newly created array using end operator. For ex:

If suppose your accuracy array is accuracy_arr, then you can write the following code to append values:

accuracy_arr = {}

accuracy_arr = [accuracy_arr new_val]

To know more about this you can go through the documentation:

https://in.mathworks.com/help/matlab/cell-arrays.html