Hi,
On Fri, 30 Nov 2007 14:55:08 -0600 Robert Kern <[EMAIL PROTECTED]> wrote: > Tartifola wrote: > > > > Hi, > > I'm working with numerical array and I'm a little lost on a particular > > sorting of one of them. In particular I have an array like > > > > a = array([[8,4,1],[2,0,9]]) > > > > and I need to sort it using only the first column as reference but > > keeping the lines together so to obtain > > > > array([[2, 0, 9], > > [8, 4, 1]]) > > In [1]: from numpy import * > > In [2]: a = array([[8,4,1],[2,0,9]]) > > In [3]: i = argsort(a[:,0]) > > In [4]: a[i] > Out[4]: > array([[2, 0, 9], > [8, 4, 1]]) > > > numpy questions are best asked on the numpy-discussion mailing list since > everyone there automatically knows that you are talking about numpy arrays and > not just misnaming lists. ;-) > > http://www.scipy.org/Mailing_Lists > thanks a lot for your help and sorry for using the wrong list. > -- > Robert Kern > > "I have come to believe that the whole world is an enigma, a harmless enigma > that is made terrible by our own mad attempt to interpret it as though it had > an underlying truth." > -- Umberto Eco > -- http://mail.python.org/mailman/listinfo/python-list
