title: Kronecker product parameters
body: <p>Between what variables is this <code>kron</code> function doing the Kronecker product? (MATLAB)</p>
  <pre class="lang-matlab prettyprint-override"><code>y = kron(x,[1:size(x)]);
  </code></pre>
  <p>I understand what the first variable is, but what does <code>[1:size(x)]</code> mean? Don't you need to put an array/list before it so it means something?</p>