``` from nifty import * s=RGSpace(3,zerocenter=True) f=Field(s,val=[0.,1.,2.]) op=FFTOperator(s) print "op domain:", op.domain[0] print "op target:", op.target[0] print "op times real field", op.times(f).val ``` This prints ``` op domain: RGSpace(shape=(3,), zerocenter=(True,), distances=(0.33333333333333331,), harmonic=False) op target: RGSpace(shape=(3,), zerocenter=(True,), distances=(1.0,), harmonic=True) op times real field [-0.33333333+0.j -0.16666667+0.8660254j 0.16666667+0.8660254j] ``` What I don't understand: if the target domain of the operator is zero-centered, why is the first value of the result real-only, and not the middle one?