[Numpy-discussion] percentile function for masked array?

[Chao YUE]

Dear all,

Thank you for this information. I will return to this issue later and
probably make patch (as temporary solution) for this. Because I never tried
before, so it may  take me some time. For the other overall masked array
constructing issues, it might be left further for more discussion.

Best,

Chao




On Mon, Jun 2, 2014 at 6:50 PM, Alexander Belopolsky <ndarray at mac.com>
wrote:

>
> On Mon, Jun 2, 2014 at 12:25 PM, Charles R Harris <
> charlesr.harris at gmail.com> wrote:
>
>> I think the masked array code is also due a cleanup/rationalization. Any
>> comments you have along that line are welcome.
>
>
> Here are a few thoughts:
>
> 1. Please avoid another major rewrite.
> 2. Stop pretending that instances of ma.MaskedArray and ndarray have "is
> a" relationship.  Use of inheritance should become an implementation detail
> and any method that is not explicitly overridden should raise an exception.
> 3. Add a mechanism to keep numpy and numpy.ma APIs in sync.  At a minimum
> - add a test comparing public functions and methods and for pure python
> functions compare signatures.
> 4. Consider deprecating the ma.masked scalar.
> 5. Support duck-typing in MaskedArray constructors.  If supplied data
> object has mask attribute it should be used as mask.  This will allow
> interoperability with alternative missing values implementations.  (ndarray
> may itself grow mask attribute one day which will be equivalent to isnan.
>  Bit views, anyone?)
>
>
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>


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