[yt-users] clump to field?

[David Collins]

Ah, Sweet.  I tried this:

>>> pf.h.boolean([pf.h.all_data(), 'NOT', clump.data])

and got this:

Building boolean100%
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Time: 00:00:01
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File
"/nics/b/home/collins/local_2013_03_12/src/yt-hg/yt/data_objects/data_containers.py",
line 4104, in __repr__
    s += region.__repr__(clean = True)
TypeError: wrapper __repr__ doesn't take keyword arguments

c32.data is of type ExtractedRegion.  It works ok if I use pf.h.sphere.
What do I need to do to condition the clump.data?

d.


On Fri, May 17, 2013 at 1:49 PM, Matthew Turk <matthewturk at gmail.com> wrote:

> I believe that is correct, yes.  One very simple way to test this and
> verify would be to compare the volume in that object plus the volume
> in your clump against the volume in the domain.
>
> On Fri, May 17, 2013 at 3:48 PM, David Collins <dcollins4096 at gmail.com>
> wrote:
> > Oh, right.  I can do
> >
> > pf.h.boolean([pf.h.all_data(), "NOT", clump])
> >
> > ?
> >
> >
> > On Fri, May 17, 2013 at 1:41 PM, Matthew Turk <matthewturk at gmail.com>
> wrote:
> >>
> >> On Fri, May 17, 2013 at 3:39 PM, David Collins <dcollins4096 at gmail.com>
> >> wrote:
> >> > Is there an easy way to turn
> >> >   data._get_cut_mask(grid)
> >> > into an AMR region?
> >> >
> >> > Then I could just do a boolean "or" on those regions from each of the
> >> > regions?
> >>
> >> Oh, you want to do it grid-by-grid?  I assumed that you were operating
> >> on the full clump.  If you have the full clump, you can feed that
> >> (which should be an AMRExtractedRegion) to the boolean object.
> >>
> >> And now that I think about it, AMRExtractedRegion is what should have
> >> the _flush_to_grids method.
> >>
> >> >
> >> > d.
> >> >
> >> >
> >> > On Fri, May 17, 2013 at 1:34 PM, Matthew Turk <matthewturk at gmail.com>
> >> > wrote:
> >> >>
> >> >> On Fri, May 17, 2013 at 3:31 PM, david collins <
> dcollins4096 at gmail.com>
> >> >> wrote:
> >> >> > Hi, all--
> >> >> >
> >> >> > I have a clump that I've gotten with the clump finder.  I'd like to
> >> >> > paint
> >> >> > those zones of that clump with a flag, so I can exclude that region
> >> >> > from
> >> >> > other analysis.  I'm a little stuck on how to get this done-- I
> feel
> >> >> > like it
> >> >> > needs to involve clump.data._flush_data_to_grids and a cut_mask,
> but
> >> >> > I'm
> >> >> > a
> >> >> > little stuck on how to define the field that I flush_to_grids.
> >> >> >
> >> >>
> >> >> I have to think about specifically how you might do this, but I do
> >> >> believe that you can probably accomplish what you're looking for by
> >> >> using a boolean region.
> >> >>
> >> >> > Specifically, how to get the cut_mask information to the field, and
> >> >> > how
> >> >> > to
> >> >> > avoid clobbering the paint from one clump with another (or, from
> one
> >> >> > grid
> >> >> > with another)
> >> >> >
> >> >> > I'm trying to do something like:
> >> >> >
> >> >> > <code>
> >> >> > for grid in clump.data._grids:
> >> >> >     cut_mask = clump.data._get_cut_mask(grid)
> >> >> >     def masked_region(field,data):
> >> >> >         cut_mask = data.get_field_parameter('cut_mask', None)
> >> >> >         try:
> >> >> >             base = data['masked_region']
> >> >> >         except:
> >> >> >             base = na.zeros(data['Density'].shape)
> >> >> >         if cut_mask is not None:
> >> >> >             base = na.maximum(base,cut_mask)
> >> >> >         return base
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> add_field('masked_region',function=masked_region,validators=[ValidateGridType()],
> >> >> > not_in_all=True)
> >> >> >     grid.set_field_parameter('cut_mask',cut_mask)
> >> >> >     print grid, cut_mask.sum(), grid['masked_region'].sum()
> >> >> > clump.data._flush_to_grids('masked_region',0)
> >> >> > </code>
> >> >> >
> >> >> > but clump['masked_region'].sum() only returns the flagged zones in
> >> >> > the
> >> >> > first
> >> >> > of the grids.
> >> >> >
> >> >> > I feel like this is something I've done before, but can't find any
> >> >> > reference
> >> >> > to it in my email or old scripts.  Apologies if this has been
> >> >> > answered
> >> >> > elsewhere, or it's obvious and I'm being thick.
> >> >> >
> >> >> > Thanks!
> >> >> > d.
> >> >> >
> >> >> >
> >> >> >
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