[yt-users] surf.export_ply issues

[Naiman, Jill]

Hi Tomer,

Its possible its a problem with particle data then.  Matt Turk or Chris
Moody - ideas?

I don't think I've ever gotten surface generation to work with particle
data, but admittedly, I didn't try very hard :P

Cheers,
-Jill

On Sun, Oct 18, 2015 at 4:44 PM, Tomer Nussbaum <
tomer.nussbaum at mail.huji.ac.il> wrote:

> Hey Jill,
>
> I've checked, and export_obj() does not work. :(
> All of this function collapse in "get_vertex_centered_data"...
>
> I would really appreciate if someone could answer me on the questions I've
> sent, since I try to write some code to solve this issue.
>
>
> Thanx,
> Tomer
>
>
> Following is the code and errors (python 2.7, YT3.2):
> sp = ds.sphere(center=center, radius=(2,'kpc'))
> rho = 5e-27
> #surf = ds.surface(sp, ('gas', 'density'), rho)
> surf = ds.surface(sp, ("deposit", "all_density"), rho)
>
> surf.export_obj("sph_2.kpc",
>
>                 color_field = "temperature")
>
>
> yt : [INFO     ] 2015-10-18 17:27:05,014 Extracting (sampling: temperature)
>
> ---------------------------------------------------------------------------NotImplementedError                       Traceback (most recent call last)<ipython-input-8-9ab0ccc2f049> in <module>()      1 surf.export_obj("sph_2.kpc",----> 2                 color_field = "temperature")/home/sharonl/miniconda/envs/iyt32/lib/python2.7/site-packages/yt/data_objects/construction_data_containers.pyc in export_obj(self, filename, transparency, dist_fac, color_field, emit_field, color_map, color_log, emit_log, plot_index, color_field_max, color_field_min, emit_field_max, emit_field_min)   1233         if self.vertices is None:   1234             if color_field is not None:-> 1235                 self.get_data(color_field,"face")   1236         elif color_field is not None:   1237             if color_field not in self.field_data:
> /home/sharonl/miniconda/envs/iyt32/lib/python2.7/site-packages/yt/data_objects/construction_data_containers.pyc in get_data(self, fields, sample_type, no_ghost)   1032                 my_verts = self._extract_isocontours_from_grid(   1033                                 block, self.surface_field, self.field_value,-> 1034                                 mask, fields, sample_type, no_ghost=no_ghost)   1035                 if fields is not None:   1036                     my_verts, svals = my_verts
> /home/sharonl/miniconda/envs/iyt32/lib/python2.7/site-packages/yt/data_objects/construction_data_containers.pyc in _extract_isocontours_from_grid(self, grid, field, value, mask, sample_values, sample_type, no_ghost)   1053                                        sample_type = "face",   1054                                        no_ghost = False):-> 1055         vals = grid.get_vertex_centered_data(field, no_ghost = no_ghost)   1056         if sample_values is not None:   1057             svals = grid.get_vertex_centered_data(sample_values)
> /home/sharonl/miniconda/envs/iyt32/lib/python2.7/site-packages/yt/data_objects/octree_subset.pyc in get_vertex_centered_data(self, *args, **kwargs)    443     444     def get_vertex_centered_data(self, *args, **kwargs):--> 445         raise NotImplementedError    446     447     @property
> NotImplementedError:
>
>
>
> Date: Thu, 15 Oct 2015 08:58:50 -0400
> From: "Naiman, Jill" <jill.naiman at cfa.harvard.edu>
> To: Discussion of the yt analysis package
>         <yt-users at lists.spacepope.org>
> Subject: Re: [yt-users] surf.export_ply issues
> Message-ID:
>         <
> CAFwWoV9HeT2UE33LFJHwW7sto0zV6RiX5VojYGFb0PCsLizccg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Tomer,
>
> One thing you might try is the export_obj function instead of the
> export_ply since its been updated more recently.  I think it *should* work
> on particle data these days (though, someone should correct me if I'm
> wrong).
>
> If that doesn't work, please let the list know though.
>
> Cheers,
> -Jill
>
> On Thu, Oct 15, 2015 at 4:26 AM, Tomer Nussbaum <
> tomer.nussbaum at mail.huji.ac.il> wrote:
>
> > Hello there,
> >
> >
> > I want to make a 3D model of my ART simulation with the YT platform.
> After
> > much reading and talking in the YT mirc I understand some code is needed
> to
> > make it work.
> >
> > I would appreciate if you could answer me about some questions I have had
> > through the last couple of days:
> >
> > 0. I understand that "export_ply" and the other functions in
> YTSurfaceBase
> > work on other simulation but not on "particle based simulations" like
> ART.
> > is this correct?
> > 1. Why does it not work on ART sim?
> > 2. What should I do in order to make it run on ART sim?
> > 3. What does "get_vertex_centered_data" suppose to do? most of the time
> > the error come from this function (not implemented..), is it a the main
> > problem? can I work around it?
> > 4. Is there a way to transform the ART data to some data that do work in
> > order to make it work?
> > 5. What is "particle based simulations"?
> >
> >
> >
> > Thnx,
> > Tomer
> >
>
>
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