FITYK(1)                    General Commands Manual                   FITYK(1)

       fityk - non-linear curve fitting and data analysis

       fityk [OPTION]... [FILE]...
       cfityk [OPTION]... [FILE]...

       This manpage documents briefly the fityk and cfityk programs for
       nonlinear fitting of analytical functions (especially peak-shaped) to
       data (usually experimental data). In other words, for nonlinear peak
       separation and analysis.
       It was developed for analyzing diffraction patterns, but can be also
       used in other fields, since concepts and operations specific for
       crystallography are separated from the rest of the program.
       Fityk offers various nonlinear fitting methods, subtracting background,
       calibrating data, easy placement of peaks and changing peak parameters,
       automation of common tasks with scripts, and much more. The main
       advantage of the program is a flexibility - parameters of peaks can be
       arbitrarily binded with each other, eg. width of peak can be an
       independent variable, can be the same as width of other peak or can be
       given by complicated - common for all peaks - formula.
       The program comes in two versions: fityk , the GUI version and cfityk ,
       the command line version.
       A user manual for fityk and cfityk can be found in

       -h, --help
              Print the usage and exit.

       -V, --version
              Print the version number and exit.

       Use --help to see the full list of options.

       This manual page was written by Carlo Segre <> and updated
       by Marcin Wojdyr.

                                January 8, 2006                       FITYK(1)