get_num_par_thawed¶
-
sherpa.astro.ui.
get_num_par_thawed
(id=None)¶ Return the number of thawed parameters in a model expression.
The get_num_par_thawed function returns the number of thawed parameters in the model assigned to a data set.
Parameters: id (int or str, optional) – The data set containing the model expression. If not given then the default identifier is used, as returned by get_default_id. Returns: npar – The number of parameters in the model expression. This sums up all the thawed parameters of the components in the expression. Return type: int Raises: sherpa.utils.err.IdentifierErr
– If no model expression has been set for the data set (with set_model or set_source).See also
get_num_par()
- Return the number of parameters.
get_num_par_frozen()
- Return the number of frozen parameters.
set_model()
- Set the source model expression for a data set.
Examples
Return the number of thawed parameters for the default data set:
>>> print(get_num_par_thawed())
Find the number of thawed parameters for the model associated with the data set called “jet”:
>>> njet = get_num_par_thawed('jet')