[Numpy-discussion] the mean, var, std of non-arrays

Yaroslav Halchenko lists at onerussian.com
Thu Jul 18 23:24:42 EDT 2013

On Thu, 18 Jul 2013, Skipper Seabold wrote:

>      Not sure anyways if my direct numpy.mean application to pandas DataFrame
>      is
>      "kosher" -- initially I just assumed that any argument is asanyarray'ed
>      first
>      -- but I think here catching TypeError for those incompatible .mean's
>      would not
>      hurt either. �What do you think? �Similar logic applies to mean cousins
>      (var,
>      std, ...?) decorated around _methods implementations.

>    Related? From a while ago.
>    [3]https://github.com/numpy/numpy/pull/160

yeah...  That is how I thought "it is working", but I guess it was left
without asanyarraying for additional flexibility/performance so any
array-like object could be used, not just ndarray derived classes.

Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Senior Research Associate,     Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
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