title: Weekly data for monthly adjustment in r
body: <p>I am working on google search data sets and get the weekly data, from <code>2004.1.4 - 2018.10.28</code>. I want to make seasonal adjustment on monthly basis. But when I run following code in r:</p>
  
  <pre><code>GTI.data = ts(GTI.data, frequency=12, start=c(2004,1))
  
  m &lt;- seas(GTI.data)
  </code></pre>
  
  <p>It shows error: 
  Error: X-13 has returned a non-zero exist status, which means that the current spec file cannot be processed for an unknown reason.</p>
  
  <p>It seems that the error is caused by the frequency. Does anyone know what value should be the correct frequency? I searched previous questions but didn't find any answer. Thanks.</p>