Hi All, I have a simple question about numeric python. If I have the matrix: 1 2 3 4 5 6 7 8 9 How would you enter this? Would it be: 1) array(((1,2,3),(4,5,6),(7,8,9))) or 2) array(((1,4,7),(2,5,8),(3,6,9))) In other words, are they entered as horizontal or vertical vectors? Thanks for your help, Matt