[yt-dev] Clump finder in 3.0

[Matthew Turk]

Yup, looks like.  Try it with the contour finder, and we can try to
update the clump finder appropriately.

On Sun, Jun 29, 2014 at 5:48 PM, Nathan Goldbaum <nathan12343 at gmail.com> wrote:
> Ah, thanks for the tip.  Guess I should have looked at the code!  I managed
> to get past that error by making the following modification:
> http://paste.yt-project.org/show/4859/
>
> Sadly it dies a little further on with this error:
> http://paste.yt-project.org/show/4860/
>
> When I poke around with a debugger, it looks like it's trying to access
> field data for the level-2 clump region, but the data object is empty.
>
>
> On Sun, Jun 29, 2014 at 3:39 PM, Matthew Turk <matthewturk at gmail.com> wrote:
>>
>> On Sun, Jun 29, 2014 at 5:38 PM, Matthew Turk <matthewturk at gmail.com>
>> wrote:
>> > Hi Nathan,
>> >
>> > On Sun, Jun 29, 2014 at 5:31 PM, Nathan Goldbaum <nathan12343 at gmail.com>
>> > wrote:
>> >> Hi all,
>> >>
>> >> I'm taking a look at the plotting docs right now.
>> >>
>> >> One of the scripts in the callback documentation currently fails with a
>> >> NotImplementedError.
>> >
>> > Ah, this is a side-effect of pf.h not having the .grids attribute;
>> > simple fix.  The clump finder should work -- I completely rewrote the
>> > it for 3.0.  There is a lingering issue with the way clump IDs are
>> > assigned, which was the subject of a failed PR:
>>
>> Sorry, let me rephrase that: I completely rewrote the *contour
>> identifier* for 3.0.  The clump finder is a layer on top of that.
>>
>> >
>> >
>> > https://bitbucket.org/yt_analysis/yt/pull-request/717/be-much-more-careful-about-assigning-clump
>> >
>> > The issue is that the clump IDs don't quite match up for some types of
>> > data, particularly multiple root grids.  I have some scripts here to
>> > verify it.
>> >
>> >>
>> >> The somewhat scipt is here: http://paste.yt-project.org/show/4857/
>> >>
>> >> And the traceback is here: http://paste.yt-project.org/show/4858/
>> >>
>> >> I'm not sure whether anyone has looked in detail at the clump finder in
>> >> 3.0.
>> >> Does anyone know about its status?  I'm not even sure if this is an
>> >> issue
>> >> with the clump finder per se.
>> >>
>> >> -Nathan
>> >>
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