Hi Morgan,
Sorry for the delay in replying. I've spent some time looking at the polar
coordinate handling in yt-3.0 this morning and I believe I have come up
with the current status.
As it stands, the actual creation of a nice plot like yt normally does --
through the PlotWindow object -- is not yet possible. There are a few more
steps that need to happen before everything can be nicely integrated like
that. However, I have refreshed my memory on the coordinate handling
system, and I have been able to make some nice images relatively easily.
The code had to have a few changes to support this; I've put these changes
into a pull request here:
https://bitbucket.org/yt_analysis/yt-3.0/pull-request/82/fix-flash-polar-cyl...
You can get them by doing:
cd $YT_DEST/src/yt-hg/
(or wherever your yt-3.0 installation is) and doing:
hg pull -r 12101b782ac8 https://bitbucket.org/MatthewTurk/yt-3.0
hg up -r 12101b782ac8
python2.7 setup.py build_ext -i -f
(the -f will force every extension to rebuild; if you get funny errors with
selector objects being the wrong size, you may need to do: "find . -name
'*.pyx' | xargs touch" and then another build_ext run.)
This script then created the correct output for me:
http://paste.yt-project.org/show/3788/
I've tested it on a few NIF items. The changes I made were specifically in
how the data is expected to be ordered; I'd incorrectly had cylindrical as
rtz and polar as rzt in FLASH. I've switched these in the PR.
Roman, Suoqing and Anthony, I've listed you as reviewers on the PR because
I know you have all looked at polar and/or cylindrical data in the past.
If you could give some feedback, and especially let me know if I have done
something wrong.
In the future, I would like to have things working such that we can do
SlicePlot( ... ) like normal. That will require a somewhat detailed
discussion with PlotWindow experts about how to set up bounds for a window,
but I think it should be doable in the not-too-distant future.
Let me know if that works for you, and if you need any more help!
Best,
Matt
On Thu, Aug 15, 2013 at 8:58 PM, Morgan MacLeod
Dear yt gurus,
I've enjoyed using yt for a number of FLASH problems in cartesian geometry. Right now I'm just starting on a setup in FLASH 2D polar (eventually also in 3D cylindrical) geometries.
These are ordered 2D polar: r, theta 3D cylindrical: r, theta, z
I was intrigued when I noticed this image on the yt-blog ( http://blog.yt-project.org/post/WhatsUpWith30.html) -- which is almost exactly what I would like to do.
[image: http://blog.yt-project.org/attachments/cylindrical_pixelizer.png]
I have updated to yt-3.0, and tried the simplest "Sliceplot" of the data:
fn = "const_rho_g_atm_hdf5_plt_cnt_0013" pf = load(fn) fig = SlicePlot(pf, 2,'dens').save("myfig.png")
This reads loads the 2D polar plot file correctly, but renders the result in a cartesian sense.
Does anyone have advice/recipes for how to proceed with Slices rendered "cylindrically"? I understand that this feature set is not yet fully developed but I was curious if there was a solution (or parts of a solution) floating around out there.
Thanks so much,
Morgan MacLeod ------------------------------------------------- Graduate Student Astronomy & Astrophysics UC Santa Cruz
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