[Numpy-discussion] using the same vocabulary for missing value ideas

Peter numpy-discussion at maubp.freeserve.co.uk
Wed Jul 6 12:33:27 EDT 2011


On Wed, Jul 6, 2011 at 4:40 PM, Mark Wiebe <mwwiebe at gmail.com> wrote:
> It appears to me that one of the biggest reason some of us have been talking
> past each other in the discussions is that different people have different
> definitions for the terms being used. Until this is thoroughly cleared up, I
> feel the design process is tilting at windmills.
> In the interests of clarity in our discussions, here is a starting point
> which is consistent with the NEP. These definitions have been added in a
> glossary within the NEP. If there are any ideas for amendments to these
> definitions that we can agree on, I will update the NEP with those
> amendments. Also, if I missed any important terms which need to be added,
> please propose definitions for them.

That sounds good - I've only been scanning these discussions and it
is confusing.

> NA (Not Available)
>     A placeholder for a value which is unknown to computations. That
>     value may be temporarily hidden with a mask, may have been lost
>     due to hard drive corruption, or gone for any number of reasons.
>     This is the same as NA in the R project.

Could you expand that to say how sums and products act with NA
(since you do so for the IGNORE case).

Thanks,

Peter



More information about the NumPy-Discussion mailing list