[yt-dev] Make DomainSubsets a subclass of YTSelectionContainer?

[Sam Leitner]

Hi Matt,
All of that sounds good to me as well.
Sam

On Wednesday, April 17, 2013, Christopher Moody wrote:

> Hi Matt,
> +1 for subclassing a DomainSubset common to ARTIO, ART and RAMSES.
>
> chris
>
>
> On Wed, Apr 17, 2013 at 1:35 PM, Douglas Harvey Rudd <drudd at uchicago.edu<javascript:_e({}, 'cvml', 'drudd at uchicago.edu');>
> > wrote:
>
>> Hi Matt,
>>
>> I'm +1 on specifying the DomainSubset interface though subclasses, and it
>> makes
>> sense to integrate it with selection.
>>
>> One question I have relating to deposition in particular is whether the
>> spatial fields
>> are expected to impose any sort of order on the octs they return.  If we
>> select a region
>> including both particles and octs, but the two are completely unordered,
>> matching
>> one set to the other may be very expensive.
>>
>> Do the deposition routines already use some organization scheme (oct
>> tree, say) to
>> match particles to grids?
>>
>> Doug
>>
>>
>> On Apr 17, 2013, at 3:24 PM, Matthew Turk <matthewturk at gmail.com<javascript:_e({}, 'cvml', 'matthewturk at gmail.com');>
>> >
>>  wrote:
>>
>> > Hi all,
>> >
>> > Today in IRC, Chris and I went back and forth on the particle
>> > deposition stuff in advance of the meeting next week.  My task right
>> > now is to come up with spatial field chunking for Octs in a consistent
>> > way; of course I'll write this up into the extant YTEP, which will
>> > allow for feedback particularly from ARTIO, ART and RAMSES folks, but
>> > as a quick first pass I was wondering what everyone thought of:
>> >
>> > 1) Unifying DomainSubsets into a single object with subclasses
>> > 2) Making that new base class a subclass, itself, of
>> YTSelectionContainer
>> >
>> > This would mean that this new base class would be very similar to the
>> > GridPatch object -- which it already is -- and would implement, most
>> > crucially, the __getitem__ accessor pattern.  This would return a
>> > 2x2x2xNoct field.
>> >
>> > [+-][01]?  Specifically, Doug, Chris, and SamL?
>> >
>> > Sidenote: I discovered that we will not have to rewrite spatial fields
>> > that currently work for grids; my understanding of the numpy
>> > broadcasting system was not complete, and I didn't realize that this
>> > script does *exactly what I want it to.
>> >
>> > http://paste.yt-project.org/show/3391/
>> >
>> > This means that our Oct spatial fields will be (2+NGZ*2, 2+NGZ*2,
>> > 2+NGZ*2, NOCT) shaped.
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