title: change date format in r
body: <p>a small problem here with a newbie R coder.</p>
  
  <p>I have a zoo series which looks like this:</p>
  
  <pre><code>              EBO.NZ      MOW.NZ      RNS.NZ       RYM.NZ      SPN.NZ
  Nov 2013 -0.026111144  0.09531018  0.00000000  0.026145280  0.01801851
  Dec 2013  0.036367644 -0.26966357  0.00000000  0.012820688 -0.06771817
  Jan 2014 -0.005115101  0.00000000 -0.28768207  0.006349228  0.10854017
  Feb 2014  0.026317308  0.00000000  0.15415068  0.000000000 -0.01729150
  Mar 2014  0.023693112 -0.04879016  0.00000000  0.102190941  0.01729150
  Apr 2014 -0.086568016  0.00000000 -0.07410797 -0.011494379  0.00000000
  May 2014  0.018967903  0.00000000  0.07410797 -0.038897066  0.00000000
  Jun 2014  0.051867242  0.22314355  0.00000000  0.027269028 -0.01149438
  Jul 2014 -0.008959741 -0.22314355  0.00000000 -0.018890762  0.01149438
  </code></pre>
  
  <p>I want the dates to be in this format (30-11-2013). Can anyone help?</p>