renorm: renormalize model to minimize statistic with current parameters

Renormalize model, or change renorm conditions.

Syntax:           renorm [AUTO | NONE | PREFIT]

The renorm command will adjust the normalizations of the model by a single multiplication factor, which is chosen to minimize the fit statistic.Such a renorm will be performed explicitly whenever the command is used without a key-word, or during certain XSPEC commands, as determined by the following key-words:

 

AUTO –          Renormalize after a model or newpar command, and at the beginning of a fit

PREFIT –        Renormalize only at the beginning of a fit

NONE –          Perform no automatic renormalizations, i.e., only perform them when a renorm command is given explicitly.