The LabPlot Handbook
LabPlot is a program for two- and three-dimensional function plotting and data analysis.

Introduction
LabPlot is a program for two- and three-dimensional graphical presentation of data sets and functions. LabPlot allows you to work with multiple plots which each can have multiple graphs. The graphs can be produced from data or from functions.
All settings of a complete set of plots can be saved in a project files. These project files may be opened by command line parameters, using the File menu, or by drag and drop.
Every object (title, legend, axes, axes label) can be dragged with the mouse. A double click on an object opens the corresponding dialog to change the options of the object.
The settings of a plot/graph may also be changed using the Appearance menu. With the Edit menu additional data sets and functions (graphs) can be included which can be displayed in the same as well as in different plot.

LabPlot Revision History
Version 1.6.0 (December 17, 2007)
new default project format (XML)
improved import dialog
versatile errorbar styles
improved memory management
HDF5 data file support
added project/dataset notes
different background brush styles
optional put drawing objects in background
customize binary byteorder in import/export
arrange sheets in tile/cascade
full ORIGIN 7.5 project support
added Laplace transform
using R math functions and constants if available
descriptive statistics/one and two sample tests using R
improved polar and 3d plot (delaunay triangulation) and data mode
Version 1.5.1 (March 27, 2006)
new analysis functions : noise, signal filter, auto-/crosscorrelation and capability analysis
"add graph" dialog in graph dialog
improved set-value dialog in spreadsheet
support for panel plots and improved surface and pie plot
much improved explorer dialog with drag and drop
save and restore sheets position/size in project
statistics on columns/rows and fitting in spreadsheets
new axes tic style and fill between curves
support for richtext in legend
save settings and update open dialogs
optional xml project format (will be used later as standard format)
lot of bug fixes
Version 1.5.0 (August 15, 2005)
more weightings+residuals for regression/nonlinear fit
added wavelet and Hankel transform and improved analysis functions
improved surface and qwt 3d plot
improved behavior with non-linear scales and LaTeX label support
import/export data from/to PostgreSQL, mySQL, etc. via KexiDB
import Origin OPJ projects (Origin worksheets only)
better scripting support
many bug fixes
Version 1.4.1 (March 28, 2005)
nonlinear fit any user-defined function with up to 9 parameter
configure default value for plot style and symbols
clone graphs and delete/clone plots
improved import/export settings with support for binary data
more analysis functions : compress, peak find, periodical, seasonal
regression/nonlinear fit of data with errorbars
speed mode for large data sets and data mode for inspecting data points
zoomin/zoomout, marker and improved axis grid
mask data points in spreadsheet and plot
Version 1.4.0 (December 15, 2004)
versatile spreadsheet with data import, editing, etc.
new 3d plot with rotation and colormaps (using qwtplot3d library)
double buffered plotting (no flicker)
data set operations
import/export of over 80 image formats (SVG, fits,...) and better image handling
direct export to PS, EPS, PDF via ghostscript
simple scripting using QSA
Version 1.3.1 (August 30, 2004)
native export to SVG, EPS and more graphic formats
support for ternary and polar plots
added (de)convolution and interpolation
better zooming, errorbar plotting and annotate values
more plot symbols and brush
reading and writing of netcdf, cdf and audio (wav,au,snd,aiff,...) files
improved graph list dialog
new file info dialog
Version 1.3.0 (June 14, 2004)
multiple plots per worksheet
handling of time and date format
improved axes settings
improved surface (density, contour) plots
improved nonlinear fit
support for pie plots
improved documentation
German handbook
Version 1.2.3 (February 16, 2004)
linear regression and nonlinear fit
improved fourier transform using gsl or fftw
integration, differences and histograms
creating, editing and moving drawing objects with mouse
reading/writing of compressed data (gzip,bzip2)
KPart for LabPlot project files
more bugfixes and improved German translation
Version 1.2.2 (December 17, 2003)
logarithmic scales of axes
support of drawing objects
support for gsl special functions and distributions
fourier transform via gsl
export to PDF, FIG, DXF, etc. via pstoedit
export to > 100 different image formats via ImageMagick
more bugfixes
Version 1.2.1 (October 26, 2003)
much improved GUI
better integration
richtext title and axes label
improved 3d plotting
new analysis functions
better data reading
configure and save user settings
examples
Version 1.2.0 (September 08, 2003)
new improved internal plot structure
parser support for functions with more parameters
new surface plot with contour support and legend
support for JPEG2000 and tiff
user guide (this handbook)
more bugfixes
Version 1.1.1 (July 26, 2003)
matrix-data-reading
density plots from function and data
parser completely rewritten
colored and scaled printing
export plot as graphics
more flexible data reading
improved axis tics label (format and position)
more bugfixes
Version 1.1 (June 22, 2003)
more object attributes (title color, grid color, etc.)
support 2d errorbars
drag and drop of the title, the axes with correct rescaling
improved save and open of all plots in a project file
lots of bug fixes
Version 1.0.3 (May 11, 2003)
Plot list in menubar
improved workspace management
drag and drop of the legend
EditDialog for editing data
Version 1.0.2 (April 4, 2003)
shift plot with toolbuttons
scaling of plot with toolbuttons
opening Dialogs via mouse click
improved print preview
Version 1.0.1 (March 18, 2003)
Print Preview implemented
introduced graph label different from name
Version 1.0 (March 3, 2003; renamed to LabPlot)
support for 3.0 and 2.x
automake and autoconf scripts (./configure)
Version 0.9.x (February 26, 2003)
improved DataDialog
save and open of an Plot
started with i18n (de)
started with migration from to
improved ListDialog
changing of data and function graphs in ListDialog
support for grid in 2d and 3d plots
Version 0.4.0 (October 7, 2002)
support for 3D Plots
using GraphList for storing all graph of a plot
better scaling of the whole plot
new class GraphM for matrix-data support
Version 0.2.1 (June 30, 2001)
Legend in Plot
ListDialog for all graphs in a Plot
Version 0.2 (June 16, 2001)
first PlotWidget with single graph
creating data via FunctionDialog
Version 0.1 (May 20, 2001; first release under the name QPlot)