title: mapping back any sklearn result to the original dataframe
body: <p>I'd like to analyze the predicted values of my random forest results in excel with the original test data as a reference.</p>
  
  <p>The predicted result comes in an array as i use this:</p>
  
  <pre><code>predict = rf.predict(test[columns])
  </code></pre>
  
  <p>how do I map back the predicted results to the original dataset using pandas?</p>
  
  <p>Regards,
  galeej</p>