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    <p><a href="http://www.gnuplot.info/" rel="nofollow noreferrer">Gnuplot</a> is a command-line driven plotting engine that runs on all major operating systems (Windows, GNU/Linux, OSX, etc.). Its initial release dates back to 1986 and it is still being actively developed. The program is written in <a href="/questions/tagged/c" class="post-tag" title="show questions tagged &#39;c&#39;" rel="tag">c</a> and is released under a custom open source license.</p> <p>Gnuplot provides a large array of styles to produce different plots including plots popular in mathematics, statistics, or even financial analysis. It can also produce various plot styles for three dimensional data including surface and contour plots. It is capable of plotting user defined functions or specific data and can even generate data through various facilities if needed.</p> <p>There is no graphical user interface contained in the official release, but several external ones are available (e.g. wgnuplot, xgfe, PlotDrop,...). Additionally there are interfaces available for multiple programming languages such as C, <a href="/questions/tagged/c%2b%2b" class="post-tag" title="show questions tagged &#39;c++&#39;" rel="tag">c++</a>, <a href="/questions/tagged/python" class="post-tag" title="show questions tagged &#39;python&#39;" rel="tag">python</a>, <a href="/questions/tagged/fortran" class="post-tag" title="show questions tagged &#39;fortran&#39;" rel="tag">fortran</a> and <a href="/questions/tagged/perl" class="post-tag" title="show questions tagged &#39;perl&#39;" rel="tag">perl</a> (see more information in links below). There are several software suites that use Gnuplot as plotting device. Amongst them are GNU <a href="/questions/tagged/octave" class="post-tag" title="show questions tagged &#39;octave&#39;" rel="tag">octave</a>, <a href="/questions/tagged/maxima" class="post-tag" title="show questions tagged &#39;maxima&#39;" rel="tag">maxima</a> and <a href="/questions/tagged/gretl" class="post-tag" title="show questions tagged &#39;gretl&#39;" rel="tag">gretl</a>. Mostly however, Gnuplot is used via scripts which automate the task of generating graphics. </p> <p>Gnuplot produces output using custom output devices called <em>terminals</em> which are available for interactive use, most popular raster formats, various vector formats (including SVG), and both postscript and pdf. Terminals are even available for various LaTeX package formats for direct inclusion into LaTeX documents allowing the document processor to do the typesetting of figure annotations or having the annotations done by gnuplot itself.</p> <p>Gnuplot is a powerful tool as it allows the customization of nearly every parameter of the plot. Recent versions even support limited but powerful programming features including command line arguments for scripts, conditional and looping statements, and the ability to do smoothing or basic statistical calculations on data.</p> <h2>Gnuplot demos</h2> <p><img src="https://i.stack.imgur.com/IfPSz.png" alt="enter image description here"> <img src="https://i.stack.imgur.com/SFTwr.png" alt="enter image description here"></p> <h2>Links</h2> <ul> <li><a href="http://www.gnuplot.info" rel="nofollow noreferrer">Gnuplot website</a></li> <li><a href="http://gnuplot.sourceforge.net/demo/" rel="nofollow noreferrer">Demo gallery</a></li> <li><a href="http://www.gnuplot.info/faq/faq.html" rel="nofollow noreferrer">Gnuplot Official FAQ</a></li> <li><a href="http://gnuplot.cvs.sourceforge.net/gnuplot/gnuplot/Copyright?view=markup" rel="nofollow noreferrer">Gnuplot license</a></li> <li><a href="http://ndevilla.free.fr/gnuplot/" rel="nofollow noreferrer">Overview over Gnuplot interfaces</a></li> <li><a href="https://sourceforge.net/projects/gnuplot/" rel="nofollow noreferrer">Gnuplot on Sourceforge (including bug reports and feature requests)</a></li> <li><a href="http://lowrank.net/gnuplot/index-e.html" rel="nofollow noreferrer">Gnuplot Tips/Not So Frequently Asked Questions</a> (alternative <a href="http://folk.uio.no/hpl/scripting/doc/gnuplot/Kawano/index-e.html" rel="nofollow noreferrer">link</a>)</li> </ul> <h2>Gnuplot Blogs</h2> <ul> <li><a href="http://www.gnuplotting.org/" rel="nofollow noreferrer">Gnuplotting</a></li> <li><a href="http://gnuplot-tricks.blogspot.com/" rel="nofollow noreferrer">Gnuplot Tricks</a></li> <li><a href="http://gnuplot-surprising.blogspot.com/" rel="nofollow noreferrer">Gnuplot Surprising</a></li> <li><a href="http://www.phyast.pitt.edu/~zov1/gnuplot/html/intro.html" rel="nofollow noreferrer">Impossible Gnuplot Graphs</a></li> <li><a href="http://spplotters.blogspot.com/" rel="nofollow noreferrer">Surrey Physics Plotters</a></li> </ul> <h2>Gnuplot Books</h2> <ul> <li><a href="https://www.manning.com/books/gnuplot-in-action-second-edition" rel="nofollow noreferrer"><em>Gnuplot In Action (2nd edition)</em> by Philipp K. Janert, Manning (2016)</a></li> <li><a href="https://www.packtpub.com/big-data-and-business-intelligence/gnuplot-cookbook" rel="nofollow noreferrer"><em>Gnuplot Cookbook</em> by Lee Phillips, Packt Publishing (2012)</a></li> </ul>
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