title: Pandas argmax() deprecation message
body: <p>When using <code>argmax()</code> it returns:</p>
  
  <blockquote>
    <p>The current behaviour of <code>Series.argmax</code> is deprecated, use <code>idxmax</code>
    instead. The behavior of  <code>argmax</code> will be corrected to return the
    positional maximum in the future. For now, use <code>series.values.argmax</code>
    or <code>np.argmax(np.array(values))</code> to get the position of the maximum
    row. 
      """Entry point for launching an IPython kernel.</p>
  </blockquote>
  
  <p>Any ideas what this means? I have used  <code>np.argmax(np.array(values))</code> to get the position of the maximum row but it just returns the max value. <code>idxmax</code> returns another error.</p>