[yt-dev] Boolean data objects in yt-3

[Brian O'Shea]

Hi Nathan,

I've stumbled across across a research task that could really use yt's
>> Boolean data object feature, and according to the documentation it is not
>> implemented in yt-3.  Have boolean data objects been replaced by something
>> else?  I know there are various filtering methods in yt, but what I really
>> need to do is spatial filtering (i.e., data in a sphere with some chunks of
>> the sphere excised).
>>
>
> This hasn't been implemented.
>
>
>>
>> In principle I'd be happy to take a crack at re-implementing it, although
>> I might need some help.  Could somebody give me a sense of why it wasn't
>> ported to yt-3 when the changeover was made?
>>
>
> The data selection API was completely rewritten.
>

How difficult might it be to re-implement the boolean data objects in the
new data selection API?  (I suppose the question is really "how difficult
might it be for somebody who is a decent programmer but not an expert in
yt's internals to do so"?)

--Brian
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