Results of the fit

When the fit is complete, the parameters and the errors on the parameters are returned to the calling program. By default (unless option N is specified), the fitted parameters, the errors on these parameters, their names (see below), the chi-squared and the number of degrees of freedom of the fit are stored in a data structure associated to the histogram ID when routines HFITH and HFITHN are invoked.

• For HFITH the value of the fitted function in each histogram channel is also stored in the histogram data structure. The parameters are given the default names: P1, P2,...,Pn.
• For HFITHN the type of the function being fitted is stored instead of the fitted values for each channel.

The information stored in the associated data structure is used during the printing/plotting phase. In particular it is written when the histogram is stored in a file with HROUT.

Naming the parameters of a fit

CALL HFINAM (ID,CHPNAM,NPAR)

Action: Modify the names of the fitted parameters in the data structure associated with the given histogram.

Input parameter:

ID

Histogram identifier.

CHPNAM

CHARACTER array specifying the name(s) to be given to the parameter(s) of the fit (truncated to 8 characters).

NPAR

Number of parameters specified.