title: Too few periods for decompose()
body: <p>the error looks like this</p>
  
  <pre><code>decompose(samplets)
  Error in decompose(samplets) : time series has no or less than 2 periods
  </code></pre>
  
  <p>i want to know whats the problem? 
  I am basically writing a code forecasting using ARIMA and i want to knoe if there is any seasonality or trend in my data.</p>
  
  <p>Hoping for a quick resonse!!!!!</p>