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A yt-based merger-tree code.

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I'm working with Amiga Halo finder data, and have the following files in my directory: .log .parameter .AHF_halos .AHF_mtree Should this be enough for ytree to work correctly? Any idea...

Hello, I have a merger tree in a .dat file with 5 columns: redshift, halo_mass, ID, ID progenitor (=-1 if it's a starting point), num (1=leaf, 0=not a leaf) 4.5...

enhancement
frontends

## PR Summary This PR is in response to Issue #159. This adds support for loading merger trees from generic ascii files that minimally define a unique id and descendent...

enhancement
frontends

Hi, I just discover that when trying to use the TreePlot routine I get an error that graphviz and pyrotechnics are not installed. These dependencies should be handled by pip...

enhancement
help wanted
infrastructure

## PR Summary This adds the `save_in_place` keyword option to the `save_arbor` function. If set to True, analysis field data will be saved into the original arbor, even if only...

enhancement

## PR Summary This adds a new `TreeContainer` class for holding a persistent collection of trees. The `trees` attribute consists of a list of all trees it contains. This will...

enhancement

I have been looking at merger trees produced for the TNG and Auriga simulations (the LHaloTree format), and occasionally the progenitor of a halo will skip one snapshot. From the...

enhancement

### Bug report The cosmology calculator instance attached to arbors is not documented.

documentation

IO has evolved organically for a while. Duplicate code for applying units and dtypes has accumulated in frontend subclasses of `TreeFieldIO`. The `_read_fields` functions should do less and rely more...

infrastructure