MATLAB: How to values for a matirx

Question

There is matix A of size 12×1000, How to get elements at the 100's poistions like at 100, 200, 300, ….,1000. And assign it to another matrix/list

Each entry at the 100's position must contains all 12 rows from the original matrix.

I tried something like this

for temp = 0:1000

selected_matrix = a(:,temp+10)

end.

Can anyone suggest me how to do this.

Answer 1

Try this

a; % 12x1000 matrix
selected_matrix = a(:, 100:100:1000)

Read about indexing in MATLAB: https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html