TreeNode.save_tree(filename=None, fields=None)

Save the tree to a file.

The saved tree can be re-loaded as an arbor.

filename : optional, string
Output file keyword. Main header file will be named <filename>/<filename>.h5. Default: “tree_<uid>”.
fields : optional, list of strings
The fields to be saved. If not given, all fields will be saved.
filename : string
The filename of the saved arbor.
>>> import ytree
>>> a = ytree.load("rockstar_halos/trees/tree_0_0_0.dat")
>>> # save the first tree
>>> fn = a[0].save_tree()
>>> # reload it
>>> a2 = ytree.load(fn)