TreeFarm(time_series[, setup_function]) |
TreeFarm is the merger-tree creator for Gadget FoF and Subfind halo catalogs. |
trace_ancestors(halo_type, root_ids[, …]) |
Trace the ancestry of a given set of halos. |
trace_descendents(halo_type[, fields, filename]) |
Trace the descendents of all halos. |
set_selector(selector, *args, **kwargs) |
Set the method for selecting candidate halos for tracing halo ancestry. |
set_ancestry_checker(ancestry_checker, …) |
Set the method for determing if a halo is the ancestor of another halo. |
set_ancestry_filter(ancestry_filter, *args, …) |
Select a method for determining which ancestors are kept. |
set_ancestry_short(ancestry_short, *args, …) |
Select a method for cutting short the ancestry search. |
AncestryChecker(function[, args, kwargs]) |
An AncestryCheck is a function that is responsible for determining whether one halo is an ancestor of another. |
add_ancestry_checker(name, function) |
Add an ancestry checking function to the registry. |
common_ids(descendent_ids, ancestor_ids[, …]) |
Determine if at least a given fraction of ancestor’s member particles are in the descendent. |
AncestryFilter(function[, args, kwargs]) |
An AncestryFilter takes a halo and a list of ancestors and returns a filtered list of filtered list of ancestors. |
add_ancestry_filter(name, function) |
Add an ancestry filter function to the registry. |
most_massive(halo, ancestors) |
Return only the most massive ancestor. |
AncestryShort(function[, args, kwargs]) |
An AncestryShort takes a halo and an ancestor halo and determines if the ancestry search should come to an end. |
add_ancestry_short(name, function) |
Add an ancestry short-out function to the registry. |
above_mass_fraction(halo, ancestor, fraction) |
Return only the most massive ancestor. |
HaloSelector(function[, args, kwargs]) |
A HaloSelector is a function that is responsible for creating a list of ids of halos that are potentially ancestors of a given halo. |
add_halo_selector(name, function) |
Add a HaloSelector to the registry of known selectors, so they can be chosen with set_selector. |
sphere_selector(hc, ds2, radius_field[, …]) |
Select halos within a sphere around the target halo. |
all_selector(hc, ds2) |
Return all halos from the ancestor dataset. |