Converting table elements to individual arrays and assigning the same header

Question

Akshay 2023-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/1900725-converting-table-elements-to-individual-arrays-and-assigning-the-same-header

评论： Akshay 2023-1-26

I have an n x 85 table and I'm looking for a way to assign each of these individual columns to a separate array under the same existing header name (all string). table2array(T) let's me convert the table to individual arrays but I want to run a for loop in order to assign the same header to each of these newly created arrays. I've extracted the header names using the following where T is my table: table_names = T.Properties.VariableNames.

Not sure how to now assign this name to the rest of the numeric data from each column on the table.

Any help would be greatly appreciated!

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Stephen23 2023-1-25

"Any help would be greatly appreciated!"

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

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Answer 1

Michael Habermann 2023-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/1900725-converting-table-elements-to-individual-arrays-and-assigning-the-same-header#answer_1156385

编辑：Michael Habermann 2023-1-25

在 MATLAB Online 中打开

t = table();
t.col_a = [1;2;3];
t.col_b = [10;11;12]
t = 3×2 table
    col_a    col_b
    _____    _____

      1       10  
      2       11  
      3       12  
column_names = t.Properties.VariableNames;
for i = 1:numel(column_names)
    colname = string(column_names(i));
    eval(sprintf("%s = t.(colname)", colname))
end
col_a = 3×1
     1
     2
     3
col_b = 3×1
    10
    11
    12

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Akshay 2023-1-26

Hi Michael,

I get the following error when I try to run your code: "Table variable names must be character vectors". Not sure why you weren't seeing the same error?

Akshay 2023-1-26