title: Using Matplotlib with TKAgg or Qt5Agg backend on 4K screen
body: <p>I'm using Matplotlib 2.0 with Python 3.6 on Ubuntu 16.04 to create plots of data. The computer monitor is 4k resolution at 3840x2160. Plot figures appear really small with tiny font:</p>
  
  <p><a href="https://i.stack.imgur.com/yemme.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yemme.jpg" alt="enter image description here"></a></p>
  
  <p>I have tried the <code>TKAgg</code> and <code>Qt5Agg</code> backends for Matplotlib but the figure window still appears small on my 4K display.</p>
  
  <p>Can the backend be configured to scale the figure windows for better viewing on high resolution displays?</p>