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----
-layout: default
-title: Examples
-menu: true
----
-
-## Using Octave
-
-First, follow the [installation guide](install.html) to install Octave on your system. Then, launch the interactive prompt by typing `octave` in a terminal or by clicking the icon in the programs menu. For further guidance, see the manual page on [Running Octave]({{site.docs_url}}Running-Octave.html).
-
-
-## Language Basics
-
-Click the headings below to see a manual page related to each topic
-{: .panel}
-
-
-### [Variable Assignment]({{site.docs_url}}Variables.html)
-
-Assign values to variables with `=` (Note: assignment is <a href="#" data-reveal-id="assignmentModal">pass-by-value</a>)
-
-
-### [Comments]({{site.docs_url}}Comments.html)
-
-`%` starts a comment block that continues to the end of the line.
-
-
-### [Evaluation]({{site.docs_url}}Simple-Examples.html)
-
-The output of every command is printed to the console unless terminated with `;`.
-The `disp()` command can be used to print output anywhere. Use `exit` to quit the console.
-
-{% highlight matlab %}
-t = 99 + 1  % prints 't = 100'
-t = 99 + 1; % nothing is printed
-disp(t);
-  100
-{% endhighlight %}
-
-
-### [Math]({{site.docs_url}}Arithmetic.html)
-
-Many mathematical operators are available in addition to the standard arithmetic.
-Operations are floating-point.
-{% highlight matlab %}
-x = 3/4*pi;
-y = sin(x)
-  0.70711
-{% endhighlight %}
-
-
-### [Matrices]({{site.docs_url}}Matrices.html)
-
-Arrays in Octave are called matrices.
-One-dimensional matrices are referred to as vectors.
-Use `space` or `,` to separate elements and `;` to start a new row.
-
-{% highlight matlab %}
-rowVec = [8 6 4]
-  8   6   4   
-columnVec = [8; 6; 4]
-  8
-  6
-  4
-mat = [8 6 4; 2 0 -2]
-  8   6   4
-  2   0  -2
-size(mat)
-  2   3
-length(rowVec)
-  3
-{% endhighlight %}
-
-
-### [Linear Algebra]({{site.docs_url}}Linear-Algebra.html)
-
-Many common linear algebra operations are simple to program using Octave's matrix syntax.
-
-{% highlight matlab %}
-columnVec * rowVec
-  64   48   32
-  48   36   24
-  32   24   16
-rowVec * columnVec
-  116
-columnVec'
-  8   6   4
-{% endhighlight %}
-
-
-### [Accessing Elements]({{site.docs_url}}Index-Expressions.html)
-
-Octave is 1-indexed. Matrix elements are accessed as `matrix(rowNum, columnNum)`.
-
-{% highlight matlab %}
-mat(2,3)
-  -2
-{% endhighlight %}
-
-
-### [Iteration]({{site.docs_url}}Statements.html)
-
-Octave supports `for` and `while` loops, as well as other control flow structures.
-
-{% highlight matlab %}
-x = zeros(50,1);
-for i=1:2:100 % iterate from 1 to 100 with step size 2
-  x(i) = i^2;
-end
-
-y = zeros(50,1);
-k = 1;
-step = 2;
-while k<=(100-step)
-  y(i) = k^2;
-  k = k + step;
-end
-{% endhighlight %}
-
-
-### [Vectorization]({{site.docs_url}}Vectorization-and-Faster-Code-Execution.html)
-
-For-loops can often be replaced or simplified using vector syntax.
-The operators `*`,`/`,`^`,`%` all support element-wise operations using `.`.
-Many other functions operate element-wise by default (`sin`,`+`,`-`, etc.).
-
-{% highlight matlab %}
-i = 1:2:100;   % create a 50-element array
-x = i.^2;      % each element is squared
-y = x + 9;     % add 9 to each element
-z = y./i;      % divide each element in y by the corresponding value in i
-w = sin(i/10); % take the sine of each element ÷ 10
-{% endhighlight %}
-
-
-### [Plotting]({{site.docs_url}}Two_002dDimensional-Plots.html)
-
-`plot` can be called with vector arguments to create 2D line and scatter plots.
-
-{% highlight matlab %}
-plot(w,i/10);
-title('w = sin(i/10)';
-xlabel('i ÷ 10');
-ylabel('w');
-{% endhighlight %}
-
-<img src="{{site.baseurl}}/img/sinePlot.png" alt="sine plot" style="height: 20rem; width: auto;" />
-
-
-### [Strings]({{site.docs_url}}Strings.html)
-
-Strings are simply arrays of characters.
-Strings can be composed using `printf`-style formatting with `sprintf` and `fprintf`.
-{% highlight matlab %}
-firstString = 'hello world';
-secondString = '!';
-[firstString,secondString]
-  hello world!
-fprintf('%s %.10f \n', 'The number is:', 10)
-  The number is: 10.0000000000
-{% endhighlight %}
-
-
-### [If-else]({{site.docs_url}}The-if-Statement.html)
-
-Conditional statements can be used to create branching logic in your code.
-
-{% highlight matlab %}
-% Print 'Foo' if divisible by 7,
-%       'Fizz' if divisible by 3,
-%       'Buzz' if divisible by 5,
-%       'FizzBuzz' if divisible by 3 and 5
-for (i = 1:1:100)
-  outputString = '';
-  if (rem(i,3) == 0) % rem is the remainder function
-    outputString = [outputString, 'Fizz'];
-  end
-  if (rem(i,5) == 0)
-    outputString = [outputString, 'Buzz'];
-  elseif (rem(i,7) == 0)
-    outputString = 'Foo';
-  else
-    outputString = outputString;
-  end
-  fprintf('i=%g: %s \n',i,outputString);
-end
-{% endhighlight %}
-
-{% highlight text %}
-  ...
-  i=12: Fizz
-  i=13:
-  i=14: Foo
-  i=15: FizzBuzz
-  ...
-{% endhighlight %}
-
-
-### [Help]({{site.docs_url}}Simple-Examples.html#Help-and-Documentation)
-
-The `help` and `doc` commands can be invoked at the Octave prompt to print documentation for any function.
-
-{% highlight matlab %}
-help plot
-doc plot
-{% endhighlight %}
-
-
-### [Packages]({{site.docs_url}}Packages.html)
-
-Community-developed packages can be added from the
-[Octave Forge](http://octave.sourceforge.net/index.html)
-to extend the functionality of Octave's core library.
-(Matlab users: Forge packages act similarly to Matlab's toolboxes.)
-The `pkg` command is used to manage these packages.
-For example, to use the image processing library from the Forge, use:
-
-{% highlight matlab %}
-pkg install -forge image % install package
-pkg load image           % load new functions into workspace
-{% endhighlight %}
-
-<div id="assignmentModal" class="reveal-modal tiny" data-reveal aria-hidden="true" role="dialog">
-{% highlight matlab %}
-a = 1
-b = a
-b = 2
-a == b % returns 0 (false)
-{% endhighlight %}
-<a class="close-reveal-modal" aria-label="Close">&#215;</a>
-</div>