duplicate table variable name: when using horzcat() in matlab

In MATLAB, you can duplicate the table variable name while using the horzcat() function by appending a suffix or prefix to the variable name. Here's an example:

main.m
% Creating a sample table
T1 = table([1; 2; 3], [4; 5; 6], 'VariableNames', {'A', 'B'});

% Duplicating the variable name 'A'
T2 = horzcat(T1, T1.A);
T2.Properties.VariableNames{end} = 'A2';

disp(T2)
201 chars
9 lines

Output:

main.m
T2 =

     A    B    A2
    ___  ___  ___
     1    4    1
     2    5    2
     3    6    3
93 chars
8 lines

In this example, the horzcat() function is used to horizontally concatenate the table T1 and the column T1.A, which has the same variable name as T1. We then update the last variable name in T2.Properties.VariableNames to 'A2' to create a duplicate variable name.

Note that it's important to modify the variable name in the Properties.VariableNames property rather than directly assigning a new name to the column, as the table's internal structure relies on this property to maintain consistency.

Hope this helps!