[yt-users] Error in making light ray for a gadget dataset

[Bili Dong - Gmail]

Hi Britton,

I was using the yt sample dataset 'GadgetDiskGalaxy/snapshot_200.hdf5' to
test the functionality.

Thanks,
Bili

On Wed, Feb 24, 2016 at 2:39 AM, Britton Smith <brittonsmith at gmail.com>
wrote:

> Hi Bili,
>
> My apologies for the long delay in replying to this thread.  By now, I
> think you may be working with Trident.  If things are working, that's
> great.  However, Trident relies on much of the machinery that you were
> trying to use, so it's still possible that you see this error.  The problem
> is likely related to how the LightRay generator is calculating the
> trajectory for the ray and not with the underlying ray machinery which it
> relies on.  If it's possible for you to give me access to this dataset, I
> would be happy to take a look at this.
>
> Britton
>
> On Mon, Feb 15, 2016 at 9:30 PM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
>
>> I think Cameron, Britton, and Devin have done this for their Trident
>> project - you might want to contact them.
>>
>> On Mon, Feb 15, 2016 at 3:23 PM, Bili Dong - Gmail <qobilidop at gmail.com>
>> wrote:
>>
>>> Hi Matt,
>>>
>>> I've tried to construct the ray and ortho_ray objects, neither of which
>>> can reproduce the error. They work just fine. I haven't succeeded in
>>> tracing down the error yet, but I'll keep working on that.
>>>
>>> Besides, I'm wondering if there are examples of successfully making
>>> light rays in a particle dataset? That may help figuring out what might go
>>> wrong.
>>>
>>> Thanks,
>>> Bili
>>>
>>> On Fri, Feb 12, 2016 at 12:42 PM, Matthew Turk <matthewturk at gmail.com>
>>> wrote:
>>>
>>>> Hi Bili,
>>>>
>>>> Hm, I'm honestly not sure.  This looks like an oddity in the way the
>>>> octree is being constructed in spatial dimensions.  Any chance you can
>>>> reproduce this with a ray or ortho_ray object, which should simplify the
>>>> number of moving parts?
>>>>
>>>> On Tue, Feb 9, 2016 at 2:04 PM, Bili Dong - Gmail <qobilidop at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi yt users,
>>>>>
>>>>> I'm trying to make a light ray for a gadget dataset using this script:
>>>>> http://paste.yt-project.org/show/6234/
>>>>>
>>>>> But I get the following error:
>>>>>
>>>>> ```
>>>>>
>>>>> /Users/qobilidop/repos/yt/yt/geometry/geometry_handler.py in fcoords(self)    320             c = obj.select_fcoords(self.dobj)    321             if c.shape[0] == 0: continue--> 322             ci[ind:ind+c.shape[0], :] = c    323             ind += c.shape[0]    324         return ci
>>>>> ValueError: could not broadcast input array from shape (81,3) into shape (40,3)
>>>>>
>>>>> ```
>>>>>
>>>>>
>>>>> My yt is on the changeset d47150dfbde6.
>>>>>
>>>>>
>>>>> I'm wondering if I'm doing it the correct way? And how could I solve the problem?
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Bili
>>>>>
>>>>>
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