Projects / Kpl


Kpl is a KDE program for two- and three-dimensional graphical presentation of data sets and functions (plotter). Multidimensional nonlinear parameter fits of functions to data sets can be performed using the Levenberg-Marquardt algorithm. General linear least square parameter fits are also possible. A D-BUS interface can be used to control Kpl by other applications and scripts.

Operating Systems

Last announcement

Website Changed 05 Mar 2010 20:29

The URL of the Kpl website has changed: PLease use now

Recent releases

  •  14 Jun 2011 17:22

    Release Notes: This version is for KDE 4. It uses a D-BUS interface. The status bar now shows information about the item under the mouse pointer. Image items can be rotated. The item list can now be docked at the main window. Cut, copy, and paste of items can be done, even between different instances of Kpl.

    •  28 Dec 2005 18:01

      Release Notes: Multiple spline items can now be fitted simultaneously to the same array item. Colored symbol pixmaps are now displayed in the item list. Text of legend and text items is displayed in the item list. Notifications about completed plots and parameter fits can be set.

      •  07 Feb 2004 21:57

        Release Notes: EPS files can now be embedded in Kpl plots. Regions may be filled by patterns. Previews of PostScript output are available.

        •  02 Apr 2003 16:40

          Release Notes: Root finding in functions and splines can now be performed. Plot items may be moved within the item list by drag and drop. The mouse can be used to rescale a plot.

          •  30 Sep 2002 09:24

            Release Notes: In this release, three-dimensional plots of data sets and function now can be performed, and smoothing spline interpolation is available for two- and three-dimensional plots of data sets.

            Recent comments

            27 Dec 2003 11:16 jroux

            very efficient simple grapher
            I find this program VERY neat and easy to use
            for even naive users, yet ok for power users.
            I think that it should be included in the main stream
            KDE. It is a lot more comfortable than grace to name
            a fairly good one.
            This is what a decent spreadsheet program should
            offer instead of what's currently avalaibale (excel, OO,
            kspread...). I found only a minor bug in the print
            output (wrong char spacing) but postscript output
            are fine (good eps with correct BB). It does not
            duplicate what is available in drawing programs
            (StarDraw...) and therefore focusses on the main
            issues: link with .so libraries is very convenient and
            simple, drag and drop of plain text file is spectacular
            and just what people need most, including simple
            .csv files usable in spreadsheets.


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