get_syserror

sherpa.astro.ui.get_syserror(id=None, filter=False, bkg_id=None)

Return the systematic error on the dependent axis of a data set.

Parameters:

• id (int or str, optional) – The identifier for the data set to use. If not given then the default identifier is used, as returned by get_default_id.
• filter (bool, optional) – Should the filter attached to the data set be applied to the return value or not. The default is False.
• bkg_id (int or str, optional) – Set if the values returned should be from the given background component, instead of the source data set.

Returns:

axis – The systematic error for each data point.

Return type:

array

Raises:

• sherpa.utils.err.DataErr – If the data set has no systematic errors.
• sherpa.utils.err.IdentifierErr – If the data set does not exist.

See also

get_error()

Return the errors on the dependent axis of a data set.

get_indep()

Return the independent axis of a data set.

get_staterror()

Return the statistical errors on the dependent axis of a data set.

list_data_ids()

List the identifiers for the loaded data sets.

set_syserror()

Set the systematic errors on the dependent axis of a data set.