I wanna know how to replace a column in below condition:
Assmuing I had a 5*5 matrix, I wanna replace each column by zeros(5,1) for 5 times. I don't mean to get a 5*5 all 0 element matrix eventually. I want to get 5 matrix with their 1st,2nd,3rd,4th,5th column be replaced individually. How could I code for this? Thanks.