calc_total_error

sherpa.utils.calc_total_error(staterror=None, syserror=None)

Add statistical and systematic errors in quadrature.

Parameters:

staterrorarray, optional

The statistical error, or None.

syserrorarray, optional

The systematic error, or None.

Returns:

errorarray or None

The errors, added in quadrature. If both staterror and syserror are None then the return value is None.