Yun Mao wrote: >I have some questions when I'm using python numeric:
>1. When I do v = u[:, :], it seems u and v still point to the same >memory. e.g. When I do v[1,1]=0, u[1,1] will be zero out as well. >What's the right way to duplicate an array? Now I have to do v = >dot(u, identity(N)), which is kind of silly. You can use v = 1*u or v = u.copy() to get the type of copy you want. >2. Is there a way to do Matlab style slicing? Use the take function. The output of the following code from Numeric import array,take a = array([1,2]) b = a c = 1*a d = a.copy() a[0] = 3 print b print c print d print take(a,[1,0,1]) is [3 2] [1 2] [1 2] [2 3 2] -- http://mail.python.org/mailman/listinfo/python-list
