Two ways are provided for specifying input parameters. The most direct way is
to write a parameter file in ASCII format. When starting the program, the name
of the parameter file can be specified with (cf. Sect. 5)
cora_fit -i filename or cora -i filename
In order to simplify this procedure, a program cora_inp is delivered,
writing a default parameter file taking into account the properties of a
particular spectrum (the spectrum must be specified with option -s and
must be an ASCII file as described in Sect. 5.1.1; spectrum.dat
is the default filename, cf. Sect. 5).
The resulting file, to be specified with the option
-i (default fit.inp), can then be edited for the individual
requirements. Example call:
cora_inp -s spectrum.dat -i fit.inp
which is identical with just typing cora_inp, taking the default
filenames. cora_inp simply finds the strongest line and determines
good starting parameters for fitting this line. Detailed explanations of
the parameters are added at the end of the input-file to help with
modifications by hand.
The other way is much more comfortable, but requires the GUI version of the
program. The program is called with (cf. Sect. 5)
cora -s spectrum_file -i parameter_file
As default the spectrum is assumed to be named spectrum.dat,
a parameter file must not be provided if default setting are sufficient. The
above described procedure cora_inp will be called with the specified
parameter file if it is not present.
In the parameter file, which is a plain ASCII text file, values are given just by entering the numbers. Switches are activated by entering the integer value 1 and deactivated by entering 0. The default input-file contains descriptions for each parameter. Calling cora will give a graphical user interface where parameters can be entered in entry fields and switches can be activated/deactivated by mouse clicks.