[Octave-bug-tracker] [bug #51437] mean(zeros(1, 0)) does not return NaN for Matlab compatibility

[Rik]

Follow-up Comment #8, bug #51437 (project octave):

Other languages which are far stronger in statistics, such as R, return NaN
for the case of empty matrices.  Sample R code,


x = matrix (c(1), nrow=3, ncol=0)
mean(x)


It seems more useful mathematically for Octave to return NaN in these cases
rather than occasionally NaN and occasionally a dimensioned empty matrix, even
if there is a rule for when "occasionally" occurs.


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