On Tue, Apr 7, 2009 at 19:10, Jochen Schroeder <cycoma...@gmail.com> wrote: > On 06/04/09 21:20, Robert Kern wrote: >> On Mon, Apr 6, 2009 at 20:53, Nathan Faggian <nfagg...@unimelb.edu.au> wrote: >> > HI, >> > I want to construct a large complex matrix, I have the real and imaginary >> > components as double vectors, is there a fast way to construct a complex >> > vector in numpy? >> >> C = np.empty((n,m), dtype=complex) >> C.real.flat[:] = real_values >> C.imag.flat[:] = imag_values >> > Just a question, is there any advantage to doing > C = 1.j *imag_values + real_values > ?
Conciseness at the expense of large temporaries and unnecessary computation. -- 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 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
