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LabPlot is a free software and cross-platform computer program for interactive scientific graphing and data analysis, written for the KDE desktop.


  • Project based management of data
  • Tree-like organization (parent-child hierarchy) of created object, navigation is done in Project Explorer
  • Folders and sub-folders within the project for a better object management
  • Spreadsheet and Matrix – data-container serving as the data source used in data analysis and visualization
  • Worksheet – area for placing different visualization objects (plots, labels, images, etc) supporting different layouts, zooming and navigation modi
  • Extensive and interactive editing capabilities
  • Support for Latex syntax in labels (plot and axis titles, etc.)
  • Extensive parser for mathematical expressions supporting great number of functions and constants, used for data generation, analysis and visualization
  • Elaborative documentation supporting the user with detailed examples und tutorials


  • Cartesian plot with an arbitrary number of freely positionable axes
  • Ordinary and cumulative histograms with different binning methods
  • Several zooming and navigation modi in the plot
  • Feature-rich and freely positionable plot legend
  • Arbitrary number of curves in the plot, defined either via a mathematical equation or by providing data sources

Data Analysis

  • Linear and non-linear regression analysis, support for several predefined and user-defined fit models
  • Numerical differentiation (up to the 6th order) and numerical integration (rectangular, trapezoid and Simpson methods)
  • Smoothing of data with moving average, Savitzky-Golay and percentile filter methods
  • Interpolation of data, support for many methods (linear, polynom, splines, piecewise cubic Hermite polynoms, etc.).
  • Fourier transform of the input data with support for many different window functions (Hann, Hamming, Blackman, etc.)
  • Fourier Filter – low-pass, high-pass, band-pass and band-reject filters of different types (Butterworth, Chebyshev I+II, Legendre, Bessel-Thomson)
  • Convolution and deconvolution of data sets
  • Auto- and cross-correlation of data sets


  • Support for different open-source computer algebra systems (CAS) like Maxima, Octave, etc.
  • Computation can be done directly in LabPlot, provided the corresponding CAS is installed
  • CAS variables holding array-like data (Maxima lists, Python lists and tuples, etc.) can be used as the source for LabPlot curves


  • Support for ASCII, binary, HDF5, netCDF, FITS, ROOT, Ngspice and JSON formats with many options to control the import process
  • For hierarchical formats like HDF5, netCDF, FITS and ROOT user-friendly visualization of the file content for data navigation and selection is available
  • Import of Origin® projects
  • Export of Worksheet (entire worksheet or current selection) to PDF, EPS, PNG and SVG
  • Export of data containers Spreadsheet and Matrix to Latex tables
  • Support for drag&drop of files to be imported


  • Datapicker for easy extraction of data from external image files
  • Editor for FITS-tags allowing the modification of FITS metadata

Author: trom

A Trade-Free operating system based on Manjaro Linux. We think it’s easier to use than MacOS, better than Windows, more customizable than Android, and more secure than iOS. For Internet users, media editors/consumers, programmers, writers, designers, artists. Everyone!

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