title: Processing loaded Matlab figure data in the workspace
body: <p>I followed the instructions <a href="https://www.mathworks.com/matlabcentral/newsreader/view_thread/249507" rel="nofollow noreferrer">here</a>. 
  I have data in the fig -file:</p>
  
  <p><img src="https://i.stack.imgur.com/IDXuo.png" alt="enter image description here"></p>
  
  <p>I run</p>
  
  <pre><code>s = load('filename.fig','-mat');
  </code></pre>
  
  <p>I get many fields of data:</p>
  
  <p><img src="https://i.stack.imgur.com/mZlQm.png" alt="enter image description here"></p>
  
  <p>I would like to get data only in the range from -1.5 to 2 in a list.</p>
  
  <p><strong>How can you retrieve data from such a Matlab data-structure?</strong> </p>