AMR rendering issues

[matthewturk]

I'm running the system with an AMR dataset, and I'm getting some results that confuse me somewhat. I have a suspicion why they are doing what they are doing, but I cannot yet verify this.

To set the stage, I've loaded up a "fake" AMR dataset using yt.testing.fake_amr_ds(geometry = "spherical") and I'm rendering the field "ones".

With a random normal, [0.18617054, 0.15260178, 0.83324573], I get an image that looks like the attached. The min/max are 0 and 3.971; this is just under what I'd expect the max to be (4.0, for through-the-center).

The AMR grids are well-defined, and the total enclosed volume is correct. It looks to me, however, like it's not fully traversing some of the grids. I am not sure if this is because they need to be entered by rays twice (which is definitely possible), but I am working on figuring that out. So I will get back to you. I just wanted to give an update.

I'm starting to suspect that I'll need to use the walkSphericalVolume function to compute the order of traversal for the grids.

[cgyurgyik]

Thanks for the update. I'll follow this; please let me know if you have any questions in regards to walkSphericalVolume.

[ak-2485]

Hi Matt. To be clear, you are expecting a completely symmetric image? What are num_polar_sections and num_azimuthal_sections here? And, what are the min and max bounds used?

[matthewturk]

Hi Ariel, This is feeding in lots of little grids, where num_polar and num_azimuthal may differ. I'm working on a tiny replicable example, which I should be able to share tomorrow.

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On Thu, Aug 6, 2020 at 8:35 PM Ariel Kellison ***@***.***> wrote: Hi Matt. To be clear, you are expecting a completely symmetric image? What are num_polar_sections and num_azimuthal_sections here? And, what are the min and max bounds used? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#204 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAVXOZ3OUUBWSHAK6HMAG3R7NK4ZANCNFSM4PUVH5LQ> .