find number of columns of a matrix in matlab

To find the number of columns of a matrix in Matlab, you can use the size function. The second value in the output of this function refers to the number of columns.

main.m
matrix = [1 2 3; 4 5 6];
num_columns = size(matrix, 2);
disp(num_columns); % Output: 3
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In the above example, we created a matrix with 2 rows and 3 columns. Then, we used the size function to find the dimensions of the matrix. By passing 2 in the second argument of the size function, we can get the number of columns of the matrix. Finally, we used the disp function to display the number of columns.

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