KmPlot is a mathematical function Plotter for the KDE-Desktop.
It has built in a powerfull parser. You can plot different functions simultaneously and combine their function terms to build new functions. KmPlot supports functions with parameters and functions in polar coordinates. Several Grid modes are possible. Plots may be printed with high precision in correct scale.
Features
powerful mathematical parser
precise metric printing
different plot types (functions, Parametric, polar)
highly configurable visual settings (plot line, axes, grid)
export to bitmap format (BMP and PNG) and scalable vector graphics (SVG)
save/load complete session in readable xml format
trace mode: cross hair following plot, coordinates shown in the status bar
support zooming
ability to draw the 1st and 2nd derivative and the integral of a plot function
support user defined constants and parameter values
various tools for plot functions: find minium/maximum point, get y-value and draw the area Between the function and the y-axis