addition of 1 & 4th column data in matlab

To perform the addition of the 1st and 4th column data in MATLAB, you can use the following code:

main.m
% Create a matrix with sample data
data = [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16];

% Get the number of rows in the matrix
numRows = size(data, 1);

% Perform the addition of the 1st and 4th columns
result = zeros(numRows, 1);
result = data(:, 1) + data(:, 4);
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In the above code, we first create a matrix data with some sample data. Then, we get the number of rows in the matrix using the size function. Finally, we perform the addition of the 1st and 4th columns by indexing the columns using : and adding them together.

The result will be a column vector containing the sum of the 1st and 4th column data.