title: How to install a matlab toolbox directly downloaded from mathworks
body: <p>I have downloaded this tool box PSOt from mathworks: <a href="http://www.mathworks.com/matlabcentral/fileexchange/7506-particle-swarm-optimization-toolbox" rel="nofollow">http://www.mathworks.com/matlabcentral/fileexchange/7506-particle-swarm-optimization-toolbox</a></p>
  
  <p>but I cannot install it into my existing matlab (R2009b 7.9.0). The steps that I performed ar as follows:</p>
  
  <pre><code>File -&gt; Set path -&gt; Add with subfolders 
  [[choose the parent directory of the tollbox]]
  save
  </code></pre>
  
  <p>but the toolbox didnot appear in my existing matlab toolbox. This is my first time installing an additional toolbox, so I don't know if I need anything else to do so.</p>
  
  <p>Any help or suggestion is appreciated</p>