On Wed, Mar 23, 2016 at 9:06 PM, Heli <heml...@gmail.com> wrote: > I have a 2D numpy array like this: > > [[1,2,3,4], > [1,2,3,4], > [1,2,3,4] > [1,2,3,4]] > > Is there any fast way to convert this array to > > [[1,1,1,1], > [2,2,2,2] > [3,3,3,3] > [4,4,4,4]]
What you want is called *transposing* the array: http://docs.scipy.org/doc/numpy/reference/generated/numpy.transpose.html That should be a sufficiently fast operation. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
