title: How to insert a figure (3x3 subplot) into a subplot in matplotlib python
body: <p>I want to insert a 3x3 figure into a subplot. <a href="https://stackoverflow.com/questions/18980915/embed-matplotlib-figure-in-larger-figure">Here</a> and <a href="https://stackoverflow.com/questions/16750333/how-do-i-include-a-matplotlib-figure-object-as-subplot">here</a> is shown a similar problem, but the solution seems not to work in case (I think).</p>
  
  <p>Can anyone please provide some code (as simple as possible) in order to produce this:</p>
  
  <p><a href="https://i.stack.imgur.com/6EaKi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6EaKi.png" alt="enter image description here"></a></p>
  
  <p>I'd be glad if someone could help with that, thanks in advance. Any answer or comment would be appreciated.</p>