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Revisit index start page.
author Kai T. Ohlhus <k.ohlhus@gmail.com>
date Mon, 17 Oct 2016 18:39:05 +0200
parents 5e297505996c
children
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2 layout: default
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3 title: Home
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4 menu: false
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7 **[GNU Octave][1]** is a high-level interpreted language,
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8 primarily intended for numerical computations,
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9 with built-in plotting and visualization capabilities.
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10 Many [Octave Forge packages][2] provide useful extensions for
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11 several scientific and engineering applications.
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12 The GNU Octave language is quite similar to [Matlab][3]
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13 so that most programs are easily portable.
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14 [Read more][4].
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16 Octave is distributed under the terms of the
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17 [GNU General Public License][5].
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19 [![GNU Octave 4.0.3 Screenshot][screen-small]][screen]
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21 [1]: http://www.octave.org
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22 [2]: http://octave.sourceforge.net/packages.php
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23 [3]: https://www.mathworks.com/matlab
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24 [4]: {{ "about.html" | relative_url }}
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25 [5]: {{ "license.html" | relative_url }}
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26 [screen]: {{ "/img/screenshot-2016.png" | relative_url }}
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27 [screen-small]: {{ "/img/screenshot-2016-small.png" | relative_url }}
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31 ---
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33 # [{% octicon rss class:"octicon-rss-octave" %}][Feed] [News]
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35 {% for post in site.posts limit:3 %}
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36 - [**{{ post.title }}**]({{ post.url | relative_url }})
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37 ({{ post.date | date: "%b %-d, %Y" }})
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39 <div class="news-content">
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40 {{ post.excerpt }}
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41 </div>
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42 {% endfor %}
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44 [Feed]: {{ "feed.xml" | relative_url }}
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45 [News]: {{ "news.html" | relative_url }}
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48 ---
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50 ## Some Examples
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52 - Solve systems of equations with linear algebra operations on
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53 **vectors** and **matrices**:
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55 {% highlight octave %}
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56 b = [4; 9; 2]; % Column vector
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57 A = [ 3 4 5;
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58 1 3 1;
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59 3 5 9 ];
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60 x = A \ b % Solve $Ax = b$ by inverting A
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61 {% endhighlight %}
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63 - Visualize data with **high-level plot commands** in 2D and 3D:
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65 {% highlight octave %}
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66 x = -10:0.1:10; % Create an evenly-spaced vector from -10 to 10
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67 y = sin (x); % y is also a vector
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68 plot (x,y);
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69 title ("Simple 2-D Plot");
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70 xlabel ("x");
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71 ylabel ("sin (x)");
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72 {% endhighlight %}
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74 [![Sine plot][plot]][plot]
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76 [plot]: {{ "/img/example-plot.png" | relative_url }}