Re: sorting complex numbers

[Tom Holroyd]

> Is there a way to sort complex numbers by either the real or imaginary
> part and be able to retain the whole complex number?

Yes.

octave:1> a = [1, 2+i, -1-i, -2+3i];
octave:2> [s, i] = sort(real(a));
octave:3> a(i)
ans =

  -2 + 3i  -1 - 1i   1 + 0i   2 + 1i