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gnufor.html
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gnufor.html
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<html>
<head>
<title>
GNUFOR - a GNUPLOT / FORTRAN90 interface
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
GNUFOR <br> a GNUPLOT / FORTRAN90 interface
</h1>
<hr>
<p>
<b>GNUFOR</b>
is a FORTRAN90 library which
provides an interface to the GNUPLOT plotting software.
</p>
<p>
<b>GNUFOR</b> makes it possible, while running a FORTRAN90 program
on a UNIX system, to generate some data and request an immediate
plot. This is done by issuing a SYSTEM command that starts up
GNUPLOT, and feeding it the appropriate commands and data. The
FORTRAN90 program pauses while the graph is displayed in an X window,
and the user can admire the plots for a while, before hitting
return and giving control back to the FORTRAN90 program.
</p>
<p>
Thanks to some suggestions of Morag Am-Shallem, the FORTRAN90
program can continue execution without waiting for GNUPLOT. In this way,
for example,
a program that was computing some quantity can, from time to time,
display an updated plot of what it is doing. A user can glance at
the picture from time to time, while the FORTRAN90 program merrily
computes away. Something like this can be done with a C program
that calls the GNUPLOT_I package.
</p>
<p>
To use this program, the command "gnuplot" must be in your path.
</p>
<p>
<a href = "http://science.webhostinggeeks.com/gnufor-gnuplot">A Serbo-Croatian version</a>
of this article is available, translated by Jovana Milutinovich from
<a href = "http://webhostinggeeks.com/">Geeks Education</a>.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>GNUFOR</b> is available in
<a href = "../../f77_src/gnufor/gnufor.html">a FORTRAN77 version</a> and
<a href = "../../f_src/gnufor/gnufor.html">a FORTRAN90 version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../examples/gnuplot/gnuplot.html">
GNUPLOT</a>,
examples which
illustrate the use of the GNUPLOT graphics program.
</p>
<p>
<a href = "../../c_src/gnuplot_i/gnuplot_i.html">
GNUPLOT_I</a>,
a C library which
allows an executing C, C++, FORTRAN77 or FORTRAN90 program
to interact with the GNUPLOT graphics program.
</p>
<p>
<a href = "../../c_src/gnuplot_i_examples/gnuplot_i_examples.html">
GNUPLOT_I_EXAMPLES</a>,
C programs which
demonstrate the use of the GNUPLOT_I library for interactive
runtime GNUPLOT graphics.
</p>
<p>
<a href = "../../cpp_src/gnuplot_i_examples/gnuplot_i_examples.html">
GNUPLOT_I_EXAMPLES</a>,
C++ programs which
demonstrate the use of the GNUPLOT_I library for interactive
runtime GNUPLOT graphics.
</p>
<p>
<a href = "../../examples/graphics_examples_gnuplot/graphics_examples_gnuplot.html">
GRAPHICS_EXAMPLES_GNUPLOT</a>,
gnuplot scripts which
illustrate how various kinds of data can be displayed and analyzed graphically
using the interactive executable graphics program gnuplot.
</p>
<p>
<a href = "../../f_src/spring_ode2/spring_ode2.html">
SPRING_ODE2</a>,
a FORTRAN90 program which
shows how gnuplot graphics can be used to illustrate
a solution of the ordinary differential equation (ODE) that describes
the motion of a weight attached to a spring.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Philipp Janert,<br>
Gnuplot in Action: Understanding Data with Graphs,<br>
Manning, 2008,<br>
ISBN: 1-933988-39-8.
</li>
<li>
Thomas Williams, Colin Kelley, John Campbell, David Kotz, Russell Lang,<br>
gnuplot, An Interactive Plotting Program,<br>
The Free Software Foundation, 1990.
</li>
<li>
<a href = "http://www.gnuplot.info/">http://www.gnuplot.info/</a>,
the GNUPLOT Website</a>.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "gnufor.f90">gnufor.f90</a>, the source code.
</li>
<li>
<a href = "gnufor.sh">gnufor.sh</a>, commands to compile
the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "gnufor_prb.f90">gnufor_prb.f90</a>, a sample problem.
</li>
<li>
<a href = "gnufor_prb.sh">gnufor_prb.sh</a>,
commands to compile, link and run the sample problem.
</li>
<li>
<a href = "gnufor_prb_output.txt">gnufor_prb_output.txt</a>,
printed output from a run of the sample problem.
</li>
</ul>
</p>
<p>
<b>TEST01</b>:
<ul>
<li>
<a href = "test01_data.txt">test01_data.txt</a>, data file #1.
</li>
<li>
<a href = "test01_commands.txt">test01_commands.txt</a>,
command file #1.
</li>
<li>
<a href = "test01.png">test01.png</a>
</li>
</ul>
</p>
<p>
<b>TEST02</b>:
<ul>
<li>
<a href = "test02_data.txt">test02_data.txt</a>, data file #2.
</li>
<li>
<a href = "test02_commands.txt">test02_commands.txt</a>,
command file #2.
</li>
<li>
<a href = "test02.png">test02.png</a>
</li>
</ul>
</p>
<p>
<b>TEST03</b>:
<ul>
<li>
<a href = "test03_data.txt">test03_data.txt</a>, data file #3.
</li>
<li>
<a href = "test03_commands.txt">test03_commands.txt</a>,
command file #3.
</li>
<li>
<a href = "test03.png">test03.png</a>
</li>
</ul>
</p>
<p>
<b>TEST04</b>:
<ul>
<li>
<a href = "test04_data.txt">test04_data.txt</a>, data file #4.
</li>
<li>
<a href = "test04_commands.txt">test04_commands.txt</a>,
command file #4.
</li>
<li>
<a href = "test04.png">test04.png</a>
</li>
</ul>
</p>
<p>
<b>TEST05</b>:
<ul>
<li>
<a href = "test05_data.txt">test05_data.txt</a>, data file #5.
</li>
<li>
<a href = "test05_commands.txt">test05_commands.txt</a>,
command file #5.
</li>
<li>
<a href = "test05.png">test05.png</a>
</li>
</ul>
</p>
<p>
<b>TEST06</b>:
<ul>
<li>
<a href = "test06_data.txt">test06_data.txt</a>, data file #6.
</li>
<li>
<a href = "table.txt">table.txt</a>,
a table of data created for command file #6.
</li>
<li>
<a href = "test06_commands.txt">test06_commands.txt</a>,
command file #6.
</li>
<li>
<a href = "test06.png">test06.png</a>
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>RUN_GNUPLOT</b> runs GNUPLOT with a given command file.
</li>
<li>
<b>TIMESTAMP</b> returns the YMDHMS date as a timestamp.
</li>
<li>
<b>WRITE_VECTOR_DATA</b> writes vector data to a file, for plotting by GNUPLOT.
</li>
<li>
<b>WRITE_VECTOR_PLOT</b> writes GNUPLOT commands to plot vectors.
</li>
<li>
<b>WRITE_XY_DATA</b> writes X(1:N), Y(1:N) data to a file.
</li>
<li>
<b>WRITE_XY_PLOT</b> writes GNUPLOT commands to plot X(1:N), Y(1:N) data.
</li>
<li>
<b>WRITE_XYY_DATA</b> writes a table of data to a file, for plotting by GNUPLOT.
</li>
<li>
<b>WRITE_XYY_PLOTS</b> writes GNUPLOT commands to make multiple (X,Y) plots.
</li>
<li>
<b>WRITE_XYZ_DATA</b> writes X(1:N), Y(1:N), Z(1:N) data to a file.
</li>
<li>
<b>WRITE_XYZ_PLOT</b> writes commands to plot parametric (X,Y,Z) data.
</li>
<li>
<b>WRITE_XYZGRID_CONTOUR</b> writes commands to plot contours of Z(X,Y).
</li>
<li>
<b>WRITE_XYZGRID_DATA</b> writes a file of XYZ grid data.
</li>
<li>
<b>WRITE_XYZGRID_SURFACE</b> writes a file of GNUPLOT commands to plot a 3D surface.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 24 June 2011.
</i>
<!-- John Burkardt -->
</body>
</html>