Dear Annamalai,

I am the author of kuibit, and I would like to highlight that the package is capable of doing what you are looking for, including 3D rendering. The package also comes with a lot of examples that you can immediately use for your goals. There are already some examples for 2D/3D plots of binary black holes, and you can see an example of rendering here: https://github.com/Sbozzolo/kuibit/tree/experimental/examples where I rendered a 3D movie with the apparent horizons, magnitude of the spins, orbits, and gravitational wave strain. You can produce the same movie for your simulation writing 0 lines of code [1].

As for yt, kuibit can prepare the data so that it is trivial to use it with yt (see GitHub issue https://github.com/Sbozzolo/kuibit/issues/18). I've never used yt and I don't even know where to start, but if you are already familiar with it, you'll be able to use it with kuibit in no time. [2]

Finally, let me point to the documentation: https://sbozzolo.github.io/kuibit/. kuibit is thoroughly documented and there are lots of examples and tutorials that will help you get started. In addition to that, we have a kuibit user group chat on Telegram (https://t.me/kuibit) where you can ask questions if you find that something is not clear.

Let me know if you have any questions, Gabriele

[1] The code is in the experimental branch, so I would actually not recommend using it at the moment because it will break in the future. However, you can still see how it is done there and use the stable version of kuibit to achieve a similar result. At this point in time, I would recommend NOT using the experimental branch.

[2] In that case, we would love you to contribute back to kuibit :)

On Mon, May 17, 2021 at 8:05 AM Roland Haas rhaas@illinois.edu wrote:

Hello Annamalai,

please take a look at our wiki:

https://docs.einsteintoolkit.org/et-docs/Analysis_and_post-processing

Linked in the "Analyzing Data Output by the Einstein Toolkit" bullet of "Documentation" section of the wiki at

https://docs.einsteintoolkit.org/et-docs/Main_Page

Please note that yt support is not currently functional since the repository linked to no longer exists.

The most functionally complete packages are likely:

• SimulationTools
• PostCactus
• Kuibit

For 3d visualization I think you are pretty much limited to VisIt unless you convert the HDF5 files into a format understood by other packages.

Yours, Roland

...

Hi Einstein Toolkit users,

I'm a relatively new Einstein Toolkit user learning to simulate and visualise binary black hole system mergers. I'm trying to write a code to visualise animated trajectories, horizons, gravitational waveforms and curvature of binary system merger using Python matplotlib and yt-project packages.

Before I proceed, I want to know what are the list of available open-source/commercial visualisation software/packages that can produce animated plots(2D and 3D) of binary system merger with data from Einstein toolkit output, and get an idea of whether something similar already

exists.

...

-- Best regards, Annamalai P S

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