Abscissa is a program to make high-quality 2D-plots from data given in ascii table form. Data can be created and modified by means of a user defined formula. A least-square-fit routine helps to optimize the parameters of this formula in order to fit the given data best. It is made for scientists.

Main features:

• ASCII data import and export
• Fast reading and plotting
• Plotting in many styles
• Linear, logarithmic, and date axes
• Text objects in the diagram
• X,y error bars
• 4 interpolation methods
• User entered functions f(x)
• Flexible functions (parameters, user data, compiled C-code)
• Parameter fitting using a Least-Squares Method
• Fit of function with several independent coordinates (R^n->R)
• External programs can use Abscissa as plot front-end
• Perl scripts can be recorded, played, and saved
• Data editing in a spread sheet
• Data sorting
• Data statistics and correlation