title: Ploting 3 maps in 2 rows using R tmap package
body: <p>I'm trying to save a plot using 3 maps made by the tmap package, with the larger one at the top, and the other 2 at the bottom like the example above:
  <a href="https://i.stack.imgur.com/auHep.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/auHep.png" alt="enter image description here"></a></p>
  
  <p>But using <code>tmap_arrange()</code> provided by the package for this kind of procedure, it gives me the followig:</p>
  
  <pre><code>data(World)
  p1 &lt;- tm_shape(World)+tm_polygons()
  p2 &lt;- tm_shape(World[World$continent=='South America',])+tm_polygons()
  p3 &lt;- tm_shape(World[World$name=='Brazil',])+tm_polygons()
  
  tmap_arrange(p1,p2,p3,nrow=2)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/YQWDH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YQWDH.png" alt="enter image description here"></a></p>
  
  <p>I've tried to use many options, like export the maps as images and then import again to R to compose a full image using <code>par()</code> and/or <code>split.screen()</code>, but also doesn't work properly.
  There is any way to work around this and get the wanted result?</p>
  
  <p>Thanks in advance!</p>