[yt-users] access coarse raw data in the AMR simulation with yt

[Nathan Goldbaum]

On Mon, Nov 3, 2014 at 8:52 PM, Nathan Goldbaum <nathan12343 at gmail.com>
wrote:

> Hi Junhwan,
>
> You can access the raw grid data by going through the index object:
>
> http://nbviewer.ipython.org/gist/ngoldbaum/aadd07cd3f188c59d272
>

Sorry, meant to send this link, which shows a bit more of the grid API at
the end:

http://nbviewer.ipython.org/gist/ngoldbaum/0735a8b6611b01ab9b2f


>
> This includes data that yt normally "masks" because higher resolution data
> is available.
>
> I'm not sure if there is a way to query data sources only up to a maximum
> level.  There's probably a hacky way to do it by loading in a fake dataset
> using load_amr_grids...
>
> -Nathan
>
> On Mon, Nov 3, 2014 at 8:36 PM, Junhwan Choi (최준환) <choi.junhwan at gmail.com
> > wrote:
>
>> Hi yt user,
>>
>> Previously, I asked basic question how I can access raw data using yt.
>> At that time, I confirm that the following script print the x, y,
>> z,vx, vy, vz, and mass for all finest cells in the spherical region
>> =================
>> from yt.mods import *
>>
>> pf = load("../DD%04d/DD%04d" % (snapshot,snapshot))
>> center = pf.h.find_max("Density")[1]
>> sp = pf.h.sphere(center, (rmax,'pc'))
>>
>> for icell in range(0,sp["CellMassMsun"].size):
>>     print sp["x"][icell], sp["y"][icell], sp["z"][icell]
>>     print sp["x-velocity"][icell], sp["y-velocity"][icell],
>> sp["z-velocity"][icell]
>>     print sp["CellMassMsun"][icell]
>> ================
>>
>> However, is there any way to access the coarse raw data?
>> For example, the highest resolution of my simulation is say N_amr=10.
>> But, I would like to access the data only up to N_amr=5 (from top grid
>> to N_amr=5 grid).
>> In this case, the grid information N_amr=6 to 10 is represented by its
>> parent grid data.
>> Is it possible?
>> If so, how can I access these coarse data?
>>
>>
>> Thank you in advance,
>> Junhwan
>> _______________________________________________
>> yt-users mailing list
>> yt-users at lists.spacepope.org
>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>
>
>
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