title: TypeError: float() argument must be a string or a number, not 'method'
body: <p>I am trying to convert the latitude and longitude to zipcodes for around 10k data points. I am using geocoder for the task. </p>
  
  <pre><code>lat = subsamp['Latitude'].as_matrix
  long = subsamp['Longitude'].as_matrix
  
  g = geocoder.google([lat, long], method='reverse')
  
  zip = g.postal
  </code></pre>
  
  <p>But, on executing the geocoder I get the error: </p>
  
  <blockquote>
    <p>TypeError: float() argument must be a string or a number, not 'method'</p>
  </blockquote>
  
  <p>I tried running it using a Pandas series then Numpy array but does not work. </p>