LabPlot is a KDE application for data plotting and function analysis. It support both 2D and 3D plots and tries to emulate most of the functions supported by programs like Microcal Origin or SPSS Sigmaplot.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This release adds support for linear regression and nonlinear fitting. The fourier transform using gsl or fftw is improved. Integration, differences, and histograms are now available. Drawing objects can now be created, edited, and moved with the mouse. A Kpart for LabPlot projects is now available. Reading and writing of compressed data was added, a lot of bugfixes were made and the German translation was improved.