get_default_id
- sherpa.astro.ui.get_default_id() IdType
Return the default data set identifier.
The Sherpa data id ties data, model, fit, and plotting information into a data set easily referenced by id. The default identifier, used by many commands, is returned by this command and can be changed by
set_default_id
.- Returns:
id – The default data set identifier used by certain Sherpa functions when an identifier is not given, or set to
None
.- Return type:
See also
list_data_ids
List the identifiers for the loaded data sets.
set_default_id
Set the default data set identifier.
Notes
The default Sherpa data set identifier is the integer 1.
Examples
Display the default identifier:
>>> print(get_default_id())
Store the default identifier and use it as an argument to call another Sherpa routine:
>>> defid = get_default_id() >>> load_arrays(defid, x, y)