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Major design change, footer, texts.
author Kai T. Ohlhus <k.ohlhus@gmail.com>
date Sun, 29 May 2022 01:25:16 +0900
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1 ---
2 layout: page
3 title: About
4 icon: <i class="fas fa-info-circle"></i>
5 menu: true
6 permalink: about
7 ---
8
9 GNU Octave is a high-level language, primarily intended for numerical
10 computations.
11 It provides a convenient command line interface for solving linear and
12 nonlinear problems numerically,
13 and for performing other numerical experiments using a language that is mostly
14 compatible with Matlab.
15 It may also be used as a batch-oriented language.
16
17 Octave has extensive tools for solving common numerical linear algebra problems,
18 finding the roots of nonlinear equations,
19 integrating ordinary functions,
20 manipulating polynomials,
21 and integrating ordinary differential and differential-algebraic equations.
22 It is easily extensible and customizable via user-defined functions written in
23 Octave's own language,
24 or using dynamically loaded modules written in C++, C, Fortran,
25 or other languages.
26
27 GNU Octave is also freely redistributable software.
28 You may redistribute it and/or modify it under the terms of the
29 [GNU General Public License (GPL)][GPL] as published by the
30 [Free Software Foundation](https://www.fsf.org/).
31
32 Octave was written by [John W. Eaton](mailto:jwe@octave.org) and
33 [many others](https://hg.savannah.gnu.org/hgweb/octave/file/tip/doc/interpreter/contributors.in).
34 Because Octave is [free software](https://www.gnu.org/philosophy/free-sw.html) you are encouraged to help make Octave
35 more useful by writing and contributing additional functions for it,
36 and by reporting any problems you may have.
37
38 ### <i class="fas fa-landmark"></i> History
39
40 Octave was originally conceived (in about 1988) to be companion software for an
41 undergraduate-level textbook on chemical reactor design being written by James
42 B. Rawlings of the University of Wisconsin-Madison and John G. Ekerdt of the
43 University of Texas.
44 We originally envisioned some very specialized tools for the solution of
45 chemical reactor design problems.
46 Later,
47 after seeing the limitations of that approach,
48 we opted to attempt to build a much more flexible tool.
49
50 There were still some people who said that we should just be using Fortran
51 instead,
52 because it is the computer language of engineering,
53 but every time we had tried that,
54 the students spent far too much time trying to figure out why their Fortran
55 code failed and not enough time learning about chemical engineering.
56 We believed that with an interactive environment like Octave,
57 most students would be able to pick up the basics quickly,
58 and begin using it confidently in just a few hours.
59
60 Full-time development began in the Spring of 1992.
61 The first alpha release was January 4, 1993, and version 1.0 was released
62 February 17, 1994.
63 Since then, Octave has been through several major revisions and is included
64 with many GNU/Linux distributions.
65 Octave was first reviewed in the July, 1997 issue of the
66 [Linux Journal](https://web.archive.org/web/20211107141537/https://www.linuxjournal.com/article/1225).
67
68 Clearly,
69 Octave is now much more than just another courseware package with limited
70 utility beyond the classroom.
71 Although our initial goals were somewhat vague,
72 we knew that we wanted to create something that would enable students to solve
73 realistic problems,
74 and that they could use for many things other than chemical reactor design
75 problems.
76 Today, thousands of people worldwide are using Octave in teaching,
77 research, and commercial applications.
78
79 Just about everyone thinks that the name Octave has something to do with music,
80 but it is actually the name of one of the author's former professor
81 [Octave Levenspiel](https://en.wikipedia.org/wiki/Octave_Levenspiel)
82 who wrote a famous textbook on chemical reaction engineering,
83 and who was also well known for his ability to do quick "back of the envelope"
84 calculations.
85 We hope that this software will make it possible for many people to do more
86 ambitious computations just as easily.
87
88 Everyone is encouraged to share this software with others under the terms of
89 the [GNU General Public License (GPL)][GPL].
90 You are also encouraged to help make Octave more useful by writing and
91 contributing additional functions for it,
92 and by reporting any problems you may have.
93
94 [GPL]: https://www.gnu.org/copyleft/gpl.html