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FAQ

107 bytes removed, 23:30, 22 October 2019
The GNU Octave distribution includes a [http://www.octave.org/octave.pdf 1000+ page Texinfo manual]. Access to the complete text of the manual is available via the <code>doc</code> command at the GNU Octave prompt.
==What is Octave-Forge?==
[https://octave.sourceforge.io/ Octave-Forge] is a collection of [[packages]] for GNU Octave, something similar to the Matlab toolboxes. When talking about the two projects at the same time, GNU Octave is usually referred to as Octave core (or just "core"). Octave-Forge also serves as a test bed for code that may eventually end up in the core, and distributes binaries for systems with a lack of developers tools (mainly Windows).
==Who uses Octave?==
Octave is free software and does not legally bind you to cite it. However, we have invested a lot of time and effort in creating GNU Octave, and we would appreciate if you would cite if you used. To cite GNU Octave in publications use:
John W. Eaton, David Bateman, Søren Hauberg, Rik Wehbring (2017{{Release Year}}).
GNU Octave version {{Release}} manual: a high-level interactive language for numerical computations.
URL https://www.gnu.org/software/octave/doc/v{{Release}}/
title = {{GNU Octave} version {{Release}} manual: a high-level interactive language for numerical computations},
author = {John W. Eaton and David Bateman and S{\o}ren Hauberg and Rik Wehbring},
year = <span>{2017</span>{{Release Year}}},
url = {https://www.gnu.org/software/octave/doc/v{{Release}}/},
}
==How can I install Octave on Android / what is this Octave app in the Google Play store?==
There is an '''unofficial''' Octave app available for Android in the Google Play store. This Octave app is no longer freely available and has become [https://en.wikipedia.org/wiki/Shareware#Nagware "nagware"]. This is a sad turn of events. Please see [[Octave for Android]] for more information.
==How can I install Octave on platform X?==
The latest version of the Octave source code (and older versions) is available from:
* httphttps://www.octave.org/download.html
* https://ftp.gnu.org/gnu/octave/
* Many optimizations of the accumarray function
* Sparse matrix indexing has been rewritten for speed
* The pkg command now accepts a -forge option to pull packages directly from Octave-forgeForge
==What's new in version series 3.2.X of Octave==
* [http://hg.savannah.gnu.org/hgweb/octave/file/83792dd9bcc1/etc/NEWS.3 NEWS.3] for the 3.X.Y series
=Packages and Octave-Forge=
==How do I install or load all Octave-Forge packages?==
Do not do it! Really, there is no reason to do this. Octave has many packages for different needs and is unlikely that you need all of them. You either have a small set of required packages, in which case
Octave has a lisp-like {{Codeline|unwind_protect}} block that allows blocks of code that terminate in an error to ensure that the variables that are touched are restored. You can do something similar with try/catch combined with {{Codeline|rethrow (lasterror ())}} in Matlab, however rethrow and lasterror are only available in Octave 2.9.10 and later. MATLAB 2008a also introduced {{Codeline|OnCleanUp}} that is similar to {{Codeline|unwind_protect}}, except that the object created by this function has to be explicitly cleared in order for the cleanup code to run.
Note that using try/catch combined with {{Codeline|rethrow (lasterror ())}} can not cannot guarantee that global variables will be correctly reset, as it won't catch user interrupts with Ctrl-C. For example
<syntaxhighlight lang="Matlab">
demo multinom
===Powerfull Powerful assert===
Function assert have extended input possibilities.

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