title: Using fuzzy logic toolbox on Octave
body: <p>I've install Octave and the fuzzy logic toolkit to work with Fuzzy Inference Systems.</p>
  
  <pre><code>pkg install fuzzy-logic-toolkit-0.4.5.tar.gz
      For information about changes from previous versions of the fuzzy-logic-toolkit package, run 'news fuzzy-logic-toolkit'.
  &gt;&gt; pkg list
  Package Name         | Version | Installation directory
  ---------------------+---------+-----------------------
  fuzzy-logic-toolkit  |   0.4.5 | /home/bgarcial/octave/fuzzy-logic-toolkit-0.4.5
  </code></pre>
  
  <p>But ... How to can I use the toolkit?</p>
  
  <p>I type <code>pkg load fuzzy-logic-toolkit</code> and the command was accepted</p>
  
  <pre><code>&gt;&gt; pkg load fuzzy-logic-toolkit
  
  &gt;&gt;
  </code></pre>
  
  <p>In this point I can test some samples and functions like in this <a href="https://iemontiel.blogspot.com.co/2013/02/instalando-el-tookit-de-logica-difusa.html" rel="nofollow noreferrer">link</a> </p>
  
  <pre><code>&gt;&gt; demo('sigmf')
  sigmf example 1:
   x = 0:100;
   params = [0.3 40];
   y1 = sigmf(x, params);
   params = [0.2 40];
   y2 = sigmf(x, params);
   params = [0.1 40];
   y3 = sigmf(x, params);
   figure('NumberTitle', 'off', 'Name', 'sigmf demo');
   plot(x, y1, 'r;params = [0.3 40];', 'LineWidth', 2)
   hold on;
   plot(x, y2, 'b;params = [0.2 40];', 'LineWidth', 2)
   hold on;
   plot(x, y3, 'g;params = [0.1 40];', 'LineWidth', 2)
   ylim([-0.1 1.2]);
   xlabel('Crisp Input Value', 'FontWeight', 'bold');
   ylabel('Degree of Membership', 'FontWeight', 'bold');
   grid;
  
  &gt;&gt;
  </code></pre>
  
  <p>And I can see this chart </p>
  
  <p><a href="https://i.stack.imgur.com/kG8uS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kG8uS.png" alt="enter image description here"></a></p>
  
  <p>My question is.</p>
  
  <p>There is some way of use <code>fuzzy-logic-toolbox</code> in which I can enter the inputs, outputs, linguistic categories and ranges in the discourse universe, like <code>fuzzy</code> toolbox in Matlab?  </p>