[Octave-bug-tracker] [bug #32168] skewness.m: initialise the output from the input

[Julien Bect]

Follow-up Comment #1, bug #32168 (project octave):

The problem is still there in Octave 3.6.4 and also in the latest development
version. Moreover, the exact same problem exists with
statistics/base/kurtosis.m.

Wouldn'it be a better idea, instead of modifying the base functions skewness
and kurtosis, to to overload them for the @dataframe class?

As a bonus, this would allow to handle non-numeric columns gracefully (by
returning NaN for them, for instance, plus perhaps a warning).



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