MATLAB: I have a data set of 400 columns and 644rows .I need to select columns 1,2,11,12,​21,22,….​.381,382,3​91,392 or move these particular columns in to a matrix.how can i write code for this in matlab

Question

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20. from this columns i need to select 1,2,11,12 columns in to one matrix and the remaining in to another matrix. 20 is just an example..i want the answer for 400 columns and 644 rows.

Answer 1

If M is the matrix with 400 columns, and if M2 is the matrix to be obtained from it, do this:

   n = 400;
   M2 = M(:,mod((1:n)-1,10)<=1);