How can I add a column with labelining in a matrix

Question

Sazid Hasan 2021-8-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1441649-how-can-i-add-a-column-with-labelining-in-a-matrix

评论： Sazid Hasan 2021-8-27

采纳的回答： Chunru

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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Answer 1

Chunru 2021-8-27

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https://ww2.mathworks.cn/matlabcentral/answers/1441649-how-can-i-add-a-column-with-labelining-in-a-matrix#answer_775269

在 MATLAB Online 中打开

% 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 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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