title: How to plot a dataframe with columns of datetimes in a line graph?
body: <p>I have a dataframe that looks like this:</p>
  
  <pre class="lang-py prettyprint-override"><code>Index      Andy           Bobby        Charlie
  0          2019-01-02     2019-01-01   2019-01-15
  1          2019-01-05     2019-01-04   2019-01-17
  2          2019-01-06     2019-02-03   2019-02-14
  ...
  103        2019-07-01     2019-06-03   NaT
  104        2019-07-06     NaT          NaT
  105        2019-07-23     NaT          NaT
  </code></pre>
  
  <p>The dates are when each person had a meeting with a client. I want to create a plot of line graphs that chart how many meetings each person had since year to date.</p>
  
  <p>I'm having trouble with the plotting syntax, also the NaT values are making it tough to graph every column? New to Python so would appreciate any help, thank you.</p>
  
  <p>It might be easier to transpose the dataframe such that the datetimes are the indices, but I am not too sure how to do that either.</p>