How can I add a column with labelining in a matrix

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Sazid Hasan
Sazid Hasan 2021-8-27
评论： Sazid Hasan 2021-8-27
I have data matrix. I have to add label column with same name Before in the matrix. How I can add this labeling?

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Chunru
Chunru 2021-8-27
Ran in:
% Create a table with some data
a = (1:10)'; b=rand(10, 1); c=randi([1,100], 10, 1);
T = table(a, b, c)
T = 10×3 table
a b c __ _______ __ 1 0.31924 57 2 0.41572 9 3 0.33329 31 4 0.52433 42 5 0.60832 6 6 0.56471 1 7 0.19825 51 8 0.20861 67 9 0.75822 19 10 0.8956 96
% Now add the label
T.label = repmat("Before", 10, 1);
T = T(:, [end 1:end-1])
T = 10×4 table
label a b c ________ __ _______ __ "Before" 1 0.31924 57 "Before" 2 0.41572 9 "Before" 3 0.33329 31 "Before" 4 0.52433 42 "Before" 5 0.60832 6 "Before" 6 0.56471 1 "Before" 7 0.19825 51 "Before" 8 0.20861 67 "Before" 9 0.75822 19 "Before" 10 0.8956 96
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Sazid Hasan
Sazid Hasan 2021-8-27
Thank you very much. If I split label like before and after 5 for before and 5 for after how it will be done? As i try define the size, it not working.

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