How to use R ggplot stat_summary to plot median and quartiles?
<p>how to change the lower and upper point in this stat summary plot to 25% quartile and 75% quartile?</p>
<pre><code>ggplot(data = diamonds) + stat_summary(
  mapping = aes(x = cut, y = depth),
  fun.ymin = min,
  fun.ymax = max,
  fun.y = median
)
</code></pre>