Table of Contents
The program comes in two versions: GUI (Graphical User Interface) version - more comfortable in most cases, and CLI (Command Line Interface) version (named cfityk to differentiate, Unix only) - used only in special situations, when visualization is not essential and user prefers to use a text terminal.
If CLI version is compiled with the GNU Readline Library, it enables command line editing and command history like in bash. Especially useful is TAB-expanding. All fityk commands, filenames and option names can be expanded. Options are set by d.set, s.set, f.set etc. commands. In CLI version, data and sum of functions can be visualized with gnuplot program. It is done automatically, if gnuplot is found.
GUI version is written using wxWidgets library. One of the main features of this library is portability. Program can be run on most Unix species with GTK+ (it is developed on Linux) and on MS Windows. Ports to other platforms supported by wxWidgets library are also possible. Read the section called “Graphical interface ” to learn how to use it.