[yt-dev] Clump finder in 3.0

[Nathan Goldbaum]

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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> >>
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