title: L-shaped Gridspec using matplotlib gs.update
body: <p>This one is a quick and easy one for the matplotlib community. I was looking to plot an L-shaped <code>gridspec</code> layout, which I have done:</p>
  
  <p><img src="https://i.stack.imgur.com/bJlHL.png" alt="enter image description here"></p>
  
  <p>Ignoring a few layout issues I have for the moment, what I have is that the x-axis in the <code>gs[0]</code> plot (top left) shares the x-axis with the <code>gs[2]</code> plot (bottom left) and the <code>gs[2]</code> shares its y axis with the <code>gs[3]</code> plot. Now, what I was hoping to do was update the <code>w-space</code> and <code>h-space</code> to be tighter. So that the axes are almost touching, so perhaps <code>wspace=0.02, hspace=0.02</code> or something similar.</p>
  
  <p>I was also hoping that the bottom right hand plot was to be longer in the horizontal orientation, keeping the two left hand plots square in shape. Or as close to square as possible. If someone could run through all of the parameters I would be very appreciative. I can tinker then in my own time.  </p>