Spectral fitting program
CALL SFIT( STATUS )
Adjusts parameters in a multicomponent model to achieve minimum chi-squared or maximum likelihood fit to one or more datasets. Only a single input dataset can be entered - if multiple datasets are to be fitted a file containing references to them must be first set up using SDATA. The user can abort the program with ^C and will retain the last update to the parameter values, which can then be used to generate plotted output and taken as the starting point for further iteration. Up to three user-defined models: FIT_USER1, _USER2 and _USER3, can be linked to a private version of the program.