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Gnuplot is a portable command-line driven graphing utility for Linux, OS/2, MS Windows, OSX, VMS, and many other platforms. The source code is copyrighted but freely distributed (i.e., you don't have to pay for it). It was originally created to allow scientists and students to visualize mathematical functions and data interactively, but has grown to support many non-interactive uses such as web scripting. It is also used as a plotting engine by third-party applications like Octave. Gnuplot has been supported and under active development since 1986.

Gnuplot supports many different types of 2D and 3D plots

Here is a Gallery of demos.

Gnuplot supports many different types of output

interactive screen display: cross-platform (Qt, wxWidgets, x11) or system-specific (MS Windows, OS/2)
direct output to file: postscript (including eps), pdf, png, gif, jpeg, LaTeX, metafont, emf, svg, ...
mouseable web display formats: HTML5, svg


Version 5.0 (previous stable) Version 5.2 (current) The Development version is gnuplot 5.3

Release History
  • gnuplot 5.2 Sep 2017
  • gnuplot 5.0 Jan 2015 ( 5.0.7 Aug 2017)
  • gnuplot 4.6 Mar 2012
  • gnuplot 4.4 Mar 2010
  • gnuplot 4.2 Apr 2007
  • gnuplot 4.0 Apr 2004
Copyright/licensing
 
Gnuplot Book Cover   Gnuplot in Action
Second Edition

by Philipp K. Janert
 
Updated for gnuplot 5
Manning Publications (2016)
ISBN: 1633430189
ISBN-13: 9781633430181
  Gnuplot 5
by Lee Phillips
 
Packt Publishing (2017)
ISBN : 978-0-692-92716-8