title: How to divide 60 mins datapoints into 15 mins?
body: <p>I have a dataset with every 60 mins interval value. Now, I want to divide them into 15mins interval using the averages between those 2 hourly values. How do I do that?</p>
  
  <pre><code>Time                 A                    
  2016-01-01 00:00:00  1  
  2016-01-01 01:00:00  5  
  2016-01-01 02:00:00  13
  </code></pre>
  
  <p>So, I now want it to be in 15mins interval with average values:</p>
  
  <pre><code>Time                      A      
  2016-01-01 00:00:00       1
  2016-01-01 00:15:00       2   ### at 2016-01-01 00:00:00 values is 1 and
  2016-01-01 00:30:00       3   ### at 2016-01-01 01:00:00 values is 5. 
  2016-01-01 00:45:00       4   ### Therefore we have to fill 4 values ( 15 mins interval ) 
  2016-01-01 01:00:00       5   ### with the average of the hour values.
  2016-01-01 01:15:00       7
  2016-01-01 01:30:00       9
  2016-01-01 01:45:00       11
  2016-01-01 02:00:00       13
  </code></pre>
  
  <p>I tried resampling it with mean to 15 mins but it won't work ( obviously ) and it given <code>Nan</code> values. Can anyone help me out? on how to do it?</p>