box% octave
GNU Octave, version 5.2.0
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octave:1> [X,Y] = meshgrid(linspace(-10,10,1000));
octave:2> Z = X + 1j*Y;
octave:3> W = Z ./ (abs(Z) .* (1 - abs(Z)));
octave:4> plot(W), axis([-10 10 -10 10])
octave:5>