in
http://docs.scipy.org/doc/numpy/reference/generated/numpy.sum.html
>>> np.sum([[0, 1], [0, 5]], axis=0) array([0, 6]) >>> np.sum([[0, 1], [0, 5]], axis=1) array([1, 5]) so looks axis=0 y-axis, i.e., going vertically. however, in
http://docs.scipy.org/doc/numpy/reference/generated/numpy.delete.html
>>> arr = np.array([[1,2,3,4], [5,6,7,8], [9,10,11,12]]) >>> arr array([[ 1, 2, 3, 4], [ 5, 6, 7, 8], [ 9, 10, 11, 12]]) >>> np.delete(arr, 1, 0) array([[ 1, 2, 3, 4], [ 9, 10, 11, 12]] axis=0 indicates x-axis, i.e., going horizontally.
why axis behaviors different in 2 methods?
