The Halo object to be provided by the HaloCatalog.
storage : string
Name of the dictionary attribute containing the profile data to be written.
Default: “profiles”
filename : string
The name of the file to be written. The final filename will be
“<filename>_<id>.h5”. If None, filename is set to the value given
by the storage keyword.
Default: None
output_dir : string
Name of directory where profile data will be written. The full path will be
the output_dir of the halo catalog concatenated with this directory.
Default : ”.”