create an empty variable in matlab

To create an empty variable in MATLAB, you can simply assign an empty array to the variable name like this:

main.m
my_variable = [];
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Alternatively, you can also use the zeros function to create an array of zeros with specified dimensions and assign it to the variable name like this:

main.m
my_variable = zeros(1, 5); % creates a 1x5 array of zeros
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Keep in mind that both of these approaches create a variable that is initially empty or filled with zeros, but it can be reassigned to any other value later on.