[yt-users] load structured mesh

[Andrea Negri]

Dear John,

thanks for the suggestions. Do you know if the grid data format is
compatible with a non uniform mesh? I was thinking of porting my
outputs in this format.


Cheers,
Andrea

On 2 May 2016 at 18:52, John Zuhone <jzuhone at gmail.com> wrote:
> Hi Andrea,
>
> yt has some support for axisymmetric grids in 2D, so you won’t need to convert to a 3D array.
>
> The bigger issue is the logarithmic grid spacing. This is currently being worked on, but is in a very early state. Currently what it does is use “logr” as the coordinate instead of r, which may not be very ideal for every situation. A lot of yt functionality is probably not compatible with this way of doing things.
>
> Nevertheless, if you would like to explore it further, let us know.
>
> Best,
>
> John Z
>
>> On May 2, 2016, at 10:53 AM, Andrea Negri <negri.andre at gmail.com> wrote:
>>
>> Of course. I have a 2.5D simulation in spherical coordinates. It is
>> axial symmetric, so the actual grid is 2D, r and theta. The grid is
>> structured, the grid spacing in theta is constant, while the spacing
>> in r follows a geometrical progression, i.e. dr[i+1] = dr[i] * factor,
>> where factor is a constant.
>>
>> I don't know if yt supports axisymmetric grids, but I can bypass this
>> issue by duplicating the 2D array into a 3D one. Sure, it is not
>> efficient...
>>
>> My ultimate goal is to produce projections, off axis projections and
>> mock X-ray observations.
>>
>>
>> Thanks,
>> Andrea
>>
>> On 2 May 2016 at 16:43, Nathan Goldbaum <nathan12343 at gmail.com> wrote:
>>> Can you share a little bit more detail about your grid structure? I know
>>> that support for log-radial bins is being worked on right now, for example.
>>>
>>> On Mon, May 2, 2016 at 3:18 AM, Andrea Negri <negri.andre at gmail.com> wrote:
>>>>
>>>> Hi all,
>>>>
>>>> I'm trying to read ZEUS-MP 2 data, and I'm building my programs step
>>>> by step. I was able to load data regularly spaced in spherical
>>>> coordinates. However, I actually have a non-uniform radial grid.
>>>>
>>>> I tried with the script in attachment, but I have got odd errors...
>>>>
>>>> Also, I have found this page, is it relevant for my case (just because
>>>> my code is mentioned, the answer would be yes :) )?
>>>> https://bitbucket.org/yt_analysis/grid_data_format
>>>>
>>>>
>>>> Thanks,
>>>> Andrea
>>>>
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