Question: How to get better 3d plot for Im(logz)

Colored axes and showing 5 colored branches (Riemann surfaces) and ln(z)  as a spiral

There is a plotcompare(log(z), expression_plot, 3); branches(ln);

FunctionAdvisor(branch_cuts, log(z));
                         [ln(z), z < 0]

The principal branch is the red colored one : Pi..-Pi (difficult to see here )

                                       pic 1

Compare this pic 1  with the Imaginaire plot log(z) in plotcompare command.

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