create a column vector 𝑡 containing the values in the first column of the loaded data in matlab

Assuming that the loaded data is stored in a variable named data, you can create a column vector 𝑡 containing the values in the first column of the loaded data using the following code:

main.m
t = data(:,1);
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Explanation:

• data(:,1) selects all the rows and the first column of the loaded data.
• The : operator selects all the rows in the selected column, which creates a column vector.

Note: If the loaded data contains header or label rows, you may need to adjust the indexing to skip them. In that case, you can use data(2:end,1) to select all rows starting from the second row.