title: Time series in R
body: <p>I am tracking my body weight in a spread sheet but I want to improve the experience by using R. I was trying to find some information about time series analysis in R but I was not successful.</p>
  
  <p>The data I have here is in the following format:</p>
  
  <pre><code>date -&gt; weight  -&gt; body-fat-percentage  -&gt; water-percentage
  </code></pre>
  
  <p>e.g.</p>
  
  <pre><code>10/08/09 -&gt; 84.30 -&gt; 18.20 -&gt; 55.3
  </code></pre>
  
  <p>What I want to do</p>
  
  <p><code>plot</code> weight and exponential moving average against time</p>
  
  <p>How can I achieve that?</p>