Hi Ankit,

Sorry this went unanswered for so long!

You might be able to correct for the lack of periodicity in the kdtree by mirroring some of the halos near each of the domain boundaries. This would make the dataset larger, but you probably wouldn't have to pad the edges by too much.

If you're still interested in making use of yt, perhaps you could elaborate on what calculations you'd like to do and we'd be happy to help figure out of there's something here that could be useful for you.

Britton

On Tue, May 2, 2017 at 2:30 PM, Ankit Singh <ansingh16@gmail.com> wrote:

Hi all,

For some work, I had to use Millenium Simulation data. I have a catalog of halos with their positions, and I wanted to get the halos in voids. Can yt be of any use for such an analysis? The thing that makes it difficult is periodic boundary conditions it doesn't allow you to use KDtree straight away.

Please help,

Thanks,
With Regards,

Ankit

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