How do you replace row names with a column?

Question

Lina J 2023-4-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1944724-how-do-you-replace-row-names-with-a-column

回答： Joe Vinciguerra 2023-4-10

say I am using matlab to read an excel file called test.xls, and the file reads into a table like this:

| names Var.1 Var.2 Var.3

1 | A 1 5 0

2 | B 2 4 1

3 | C 3 3 2

4 | D 4 2 3

5 | E 5 1 4

what do I need to do to turn the test.xls table into this:

names Var.1 Var.2 Var.3

A 1 5 0

B 2 4 1

C 3 3 2

D 4 2 3

E 5 1 4

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

the cyclist 2023-4-10

Can you upload the test.xls file, and the code you used to import it into MATLAB? You can use the paper clip icon in the INSERT section of the toolbar.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Joe Vinciguerra 2023-4-10

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1944724-how-do-you-replace-row-names-with-a-column#answer_1213084

在 MATLAB Online 中打开

T = array2table(magic(3));
Names = {'A'; 'B'; 'C'};
T.Names = Names;
T = movevars(T, "Names", "Before", "Var1");
% Here's your table
T
T = 3×4 table
    Names    Var1    Var2    Var3
    _____    ____    ____    ____

    {'A'}     8       1       6  
    {'B'}     3       5       7  
    {'C'}     4       9       2  
% Label the rows using the column T.Names
T.Properties.RowNames = T.Names
T = 3×4 table
         Names    Var1    Var2    Var3
         _____    ____    ____    ____

    A    {'A'}     8       1       6  
    B    {'B'}     3       5       7  
    C    {'C'}     4       9       2  
% remove the "Names" column
T = removevars(T, "Names")
T = 3×3 table
         Var1    Var2    Var3
         ____    ____    ____

    A     8       1       6  
    B     3       5       7  
    C     4       9       2  
% Rename the row dimension to "Names"
T.Properties.DimensionNames(1) = {'Names'}
T = 3×3 table
         Var1    Var2    Var3
         ____    ____    ____

    A     8       1       6  
    B     3       5       7  
    C     4       9       2  
T.Names
ans = 3×1 cell array
    {'A'}
    {'B'}
    {'C'}