[Numpy-discussion] average of array containing NaN

[Andrew Straw]

Giorgio F. Gilestro wrote:
> I find myself in a situation where an array may contain not-Numbers
> that I set as NaN.
> Yet, whatever operation I do on that array( average, sum...) will
> threat the NaN as infinite values rather then ignoring them as I'd
> like it'd do.
> 
> Am I missing something? Is this a bug or a feature? :-)

You may be interested in masked arrays.