add variable to array in matlab

To add a variable to an array in MATLAB, you can use the cat function. Here's an example:

main.m
% initialize an array
arr = [1, 2, 3];

% add a variable to the end of the array
var = 4;
arr = cat(2, arr, var);

% display the updated array
disp(arr);
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10 lines

Output:

main.m
1   2   3   4
14 chars
2 lines

In this example, cat(2, arr, var) concatenates the existing arr array with the variable var. The 2 argument tells MATLAB to concatenate the arrays along the second dimension (i.e. add var as a new column).

Alternatively, you can also use the square bracket notation to concatenate arrays and variables:

main.m
% add a variable to the end of the array using square brackets
arr = [arr, var];
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3 lines

This has the same effect as the cat function.