title: edit strip size ggplot2
body: <p>I have tried to apply this solution (<a href="https://stackoverflow.com/questions/27407355/how-can-i-change-the-size-of-the-strip-on-facets-in-a-ggplot]">How can I change the size of the strip on facets in a ggplot?</a><a href="https://i.stack.imgur.com/ys8eu.png" rel="noreferrer">1</a>)  to change the size of the strip on facets in a ggplot, I have increase the height size</p>
  
  <pre><code>library(ggplot2)
  library(gtable)
  
  d &lt;- ggplot(mtcars, aes(x=gear)) + 
              geom_bar(aes(y=gear), stat="identity", position="dodge") +
              facet_wrap(~cyl)
  
  g &lt;- ggplotGrob(d)
  g$heights[[3]] = unit(5,"in")
  
  grid.newpage()
  grid.draw(g)
  </code></pre>
  
  <p>This is what I get, it does only increase the space (white) on the top of the strip:
  <a href="https://i.stack.imgur.com/ys8eu.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ys8eu.png" alt="enter image description here"></a></p>
  
  <p>Why does it work differently?</p>