[yt-users] Rendering non-cubical volumes

[Chris Beaumont]

I'll send it your way :)

chris

On Wed, Jun 5, 2013 at 3:10 PM, Nathan Goldbaum <nathan12343 at gmail.com>wrote:

> Excellent, happy volume rendering!  I'd love to see the final product once
> you've finished tweaking your volume rendering script :)
>
>
> On Wed, Jun 5, 2013 at 11:53 AM, Chris Beaumont <cbeaumont at cfa.harvard.edu
> > wrote:
>
>> Thanks, Nathan. That does the trick
>>
>> cheers,
>> chris
>>
>>
>> On Tue, Jun 4, 2013 at 3:10 PM, Nathan Goldbaum <nathan12343 at gmail.com>wrote:
>>
>>> Hi Chris,
>>>
>>> You can set the aspect ratio of your volume via the bbox keyword for
>>> load_uniform_grid.  See the example in load_uniform_grid's docstrings:
>>>
>>> bbox : array_like (xdim:zdim, LE:RE), optional
>>>       Size of computational domain in units sim_unit_to_cm
>>>
>>> >>> arr = np.random.random((128, 128, 129))
>>> >>> data = dict(Density = arr)
>>> >>> bbox = np.array([[0., 1.0], [-1.5, 1.5], [1.0, 2.5]])
>>> >>> pf = load_uniform_grid(data, arr.shape, 3.08e24, bbox=bbox,
>>> nprocs=12)
>>>
>>> I'm not sure whether the volume renderer will use non-cubic voxels, but
>>> this should be an easy thing to modify and double check on your end.
>>>
>>> Cheers,
>>>
>>> Nathan
>>>
>>>
>>>
>>> On Tue, Jun 4, 2013 at 11:59 AM, Chris Beaumont <cnb4ster at gmail.com>wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm new to yt and this list, so I apologize if this question has been
>>>> answered before.
>>>>
>>>> I'm trying to render a non-cubical volume (observational data: see an
>>>> early attempt at https://vimeo.com/67421373). If I supply a scalar
>>>> "resolution" to Camera.__init__, the output is a square, even though the
>>>> input data is ~2x wider than it is tall. If I supply a tuple of values, I
>>>> can manually stretch the image but, as you can tell from the movie, I want
>>>> to spin around the volume. I don't think that messing with resolution will
>>>> help me in this case, since the projected aspect ratio of the plot changes
>>>> at each rotation step.
>>>>
>>>> I did find an old thread similar to this (
>>>> http://lists.spacepope.org/pipermail/yt-users-spacepope.org/2012-July/002793.html),
>>>> but the recipe there seem specific to axis-aligned slices, and not generic
>>>> rotations.
>>>>
>>>> Is there a natural way to force yt to render pixels with the "right"
>>>> aspect ratio?
>>>>
>>>>
>>>> Thanks,
>>>> Chris
>>>>
>>>>
>>>> --
>>>> ************************************
>>>> Chris Beaumont
>>>> Graduate Student
>>>> Institute for Astronomy
>>>> University of Hawaii at Manoa
>>>> 2680 Woodlawn Drive
>>>> Honolulu, HI 96822
>>>> www.ifa.hawaii.edu/~beaumont
>>>> ************************************
>>>>
>>>> _______________________________________________
>>>> yt-users mailing list
>>>> yt-users at lists.spacepope.org
>>>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>>>
>>>>
>>>
>>> _______________________________________________
>>> yt-users mailing list
>>> yt-users at lists.spacepope.org
>>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>>
>>>
>>
>> _______________________________________________
>> yt-users mailing list
>> yt-users at lists.spacepope.org
>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>
>>
>
> _______________________________________________
> yt-users mailing list
> yt-users at lists.spacepope.org
> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.spacepope.org/pipermail/yt-users-spacepope.org/attachments/20130605/1b8f302f/attachment.html>