I have a 17 x 75 matrix A, and have created a copy of the same matrix (B) for making changes. I want to manipulate this matrix by adding a column of 0's in between each column now. Furthermore, I want to shift the numbers in the ODD rows to the right by 1. In the end, I will have a "triangular" matrix. I have added a picture for visual reference.
Any help would be appreciated.