[yt-users] yt volume render/AMRKDtree help

Sam Skillman samskillman at gmail.com
Tue Jan 8 08:25:43 PST 2013

Hi Renyue,

I have actually seen this on one other system but I could never reproduce
it. Could you tell me the version of yt you are using? If you run "yt
instinfo" it should tell you. I haven't seen this bug for the last few
months so I thought it was gone.

Additionally, can you try the following at the end of your script:


write_bitmap(im, 'test2.png', transpose=False)

I think there may have been something wrong with the transposing of the
image for a short time period a few months ago.  I have very sporadic and
unreliable internet at AAS but I'll try to respond as quickly as possible.

Sorry for the trouble,


On Jan 7, 2013 10:11 AM, "Renyue Cen" <cen at astro.princeton.edu> wrote:

> Hi,
> I did some simple volume rendering with the following script:
>     volume2 = AMRKDTree(pf, fields=["Dark_Matter_Density"],
>                 no_ghost=False, tree_type="domain",
>                 le=c-0.5*WW, re=c+0.5*WW)
>     cam = pf.h.camera(c, L, W, N, tf, volume=volume2, no_ghost=False,
>                 north_vector=L, steady_north=True)
>     cam.snapshot(fn="%s_iso-DMdensity-%3.3d.png" % (filenameTHIS, j))
> I got rather strange results in that the pictures look symmetric, which I
> am pretty
>  sure can not be true.
> I attach the obtained plot.
> Note that I am using KD tree and using 32 cores.
> Your help at your earliest convenience is appreciated.
> Best,
> Renyue
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