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Markdownify more pages, make better use of SVG and CSS.
author Kai T. Ohlhus <k.ohlhus@gmail.com>
date Wed, 12 Oct 2016 01:48:26 +0200
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2 layout: default
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3 ---
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5 **[GNU Octave][1]** is a high-level interpreted language,
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6 primarily intended for numerical computations,
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7 with built-in plotting and visualization capabilities.
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8 Many [Octave Forge packages][2] provide useful extensions for
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9 several scientific and engineering applications.
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10 The GNU Octave language is quite similar to [Matlab][3]
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11 so that most programs are easily portable.
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13 Octave is distributed under the terms of the
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14 [GNU General Public License][4].
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16 [![GNU Octave 4.0.3 - Licensed under CC BY-SA 3.0][screen-small]][screen]
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18 [1]: http://www.octave.org
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19 [2]: http://octave.sourceforge.net/packages.php
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20 [3]: https://www.mathworks.com/matlab
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21 [4]: https://www.gnu.org/copyleft/gpl.html
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22 [screen]: {{ "/img/screenshot-2016.png" | relative_url }}
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23 [screen-small]: {{ "/img/screenshot-2016-small.png" | relative_url }}
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27 ---
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29 # [{% octicon rss class:"octicon-rss-octave" %}]({{ "/feed.xml" | relative_url }}) News
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31 {% for post in site.posts limit:3 %}
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32 - [{{ post.title }}]({{ post.url | relative_url }})
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33 ({{ post.date | date: "%b %-d, %Y" }}):
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34 <span class="post-small">{{ post.excerpt | strip_html}}
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35 {% endfor %}
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39 ---
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41 ## Some Examples
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43 - Solve systems of equations with linear algebra operations on
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44 **vectors** and **matrices**:
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46 {% highlight octave %}
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47 b = [4; 9; 2] % Column vector
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48 A = [ 3 4 5;
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49 1 3 1;
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50 3 5 9 ]
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51 x = A \ b % Solve $Ax = b$ by inverting A
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52 {% endhighlight %}
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54 - Visualize data with **high-level plot commands** in 2D and 3D:
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56 {% highlight octave %}
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57 x = -10:0.1:10 % Create an evenly-spaced vector from -10..10
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58 y = sin(x) % y is also a vector
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59 plot(x,y)
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60 {% endhighlight %}
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62 ![Sine plot]({{ "/img/plot.png" | relative_url }})