This is my first foray into doing halo finding / merger tree analysis so forgive me if I'm just missing something simple. My goal is to be able to identify a halo at lower-z that had specific properties at higher-z so I can get its lagrangian volume at lower-z to build a nested zoom. (And I'm assuming merger trees are the only / best way to identify the halo across snapshots for this).
Anyway, I've been following the docs for yt_astro_analysis to build halo catalogs for a series of datasets and just tried the example in treefarm to build a merger tree, but I get an error. I'm using the last_yt3 changeset of yt, am on the master branch of treefarm, and halos were generated using rockstar-galaxies via master branch of yt_astro_analysis. And the datasets are DM-only Enzo runs.
When running this (slightly modified from the example code):
Thanks for the help!!
Pasadena Fellow in Theoretical Astrophysics
California Institute of Technology