how to add anew column to the table using MATLAB

Question

C PRASAD 2022-3-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1673549-how-to-add-anew-column-to-the-table-using-matlab

回答： Stephen23 2022-3-17

I have Fatures data of 30*5 of size.I would like to add a column to the table as "class" and In that class every 10 rows has to named differently.First 10 rows as "Helathy' then 11 to 20 as "Myopathy" and 21 to 30 as "Neuropathy".

X=randi(10,30,5);

X=arry2table(X,'variableNames',{'feat1','feat2',feat3',feat4','feat5'};

Now I need to add a column to the table (values as taken as example) so the resultatnt must be

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Answer 1

Stephen23 2022-3-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1673549-how-to-add-anew-column-to-the-table-using-matlab#answer_919764

在 MATLAB Online 中打开

M = randi(10,30,5);
T = array2table(M,'variableNames',{'feat1','feat2','feat3','feat4','feat5'})
T = 30×5 table
feat1feat2feat3feat4feat5_________________________

      9        2        1        3  
      2       10        2        3  
      2        1        3        1  
      5        4        1        3  
      1        4        6        8  
     10        7       10        3  
     10        6        7        9  
      9        8        3        7  
      7        7        6        2  
      9        3        7        4  
      1        2        7        8  
      5        5        2        3  
      2        1        8       10  
      2        4        7        7  
      4        1        2        4  
      3        9        4        8  
T.Class = repelem(["Healthy";"Myopathy";"Neuropathy"],10,1)
T = 30×6 table
feat1feat2feat3feat4feat5Class___________________________________

      9        2        1        3      "Healthy" 
      2       10        2        3      "Healthy" 
      2        1        3        1      "Healthy" 
      5        4        1        3      "Healthy" 
      1        4        6        8      "Healthy" 
     10        7       10        3      "Healthy" 
     10        6        7        9      "Healthy" 
      9        8        3        7      "Healthy" 
      7        7        6        2      "Healthy" 
      9        3        7        4      "Healthy" 
      1        2        7        8      "Myopathy"
      5        5        2        3      "Myopathy"
      2        1        8       10      "Myopathy"
      2        4        7        7      "Myopathy"
      4        1        2        4      "Myopathy"
      3        9        4        8      "Myopathy"