title: Reading a comma-separated string (not text file) in Matlab
body: <p>I want to read a string in Matlab (<strong>not an external text file</strong>) which has numerical values separated by commas, such as</p>
  <pre><code>a = {'1,2,3'}
  </code></pre>
  <p>and I'd like to store it in a vector <strong>as numbers</strong>. Is there any function which does that? I only find processes and functions used to do that with text files.</p>