Pasted

box% octave
GNU Octave, version 5.2.0
Copyright (C) 2020 John W. Eaton and others.
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 Octave was configured for "x86_64-pc-linux-gnu".
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 octave:1> [X,Y] = meshgrid(linspace(-1,1,1000));
octave:2> Z = X + 1j*Y;
octave:3> Z = Z(:);
octave:4> Z = Z(abs(Z) < 1);
octave:5> W = Z ./ (abs(Z) .* (1 - abs(Z)));
octave:6> plot(W), axis([-10 10 -10 10])
octave:7>