title: inverse X and Y axis using geom_ribbon in ggplot2
body: <p>is it possible to use geom_ribbon from the package ggplot2, but with the range plotted horizontally and not vertically. This would be trivial if "geom_ribbon" proposed the options xmin/xmax, but this is not the case. </p>
  
  <p>Here is my data, a simplified plotting function for testing and the figure I obtain. So in this example, I would like to have the "depth" axis displayed vertically.</p>
  
  <pre><code>prof &lt;- read.table(text = " depth prop mean error
  1 5 FALSE 2.12 0.035
  2 15 FALSE 2.06 0.035
  3 25 FALSE 1.54 0.035
  4 35 FALSE 0.92 0.033
  5 45 FALSE 0.71 0.028
  6 55 FALSE 0.60 0.026
  7 65 FALSE 0.54 0.024
  8 75 FALSE 0.49 0.023
  9 85 FALSE 0.46 0.022
  10 95 FALSE 0.43 0.022
  11 105 FALSE 0.41 0.022
  12 115 FALSE 0.39 0.021
  13 5 TRUE 2.18 0.061
  14 15 TRUE 2.11 0.061
  15 25 TRUE 1.58 0.054
  16 35 TRUE 0.97 0.047
  17 45 TRUE 0.76 0.042
  18 55 TRUE 0.67 0.043
  19 65 TRUE 0.61 0.040
  20 75 TRUE 0.54 0.033
  21 85 TRUE 0.48 0.028
  22 95 TRUE 0.45 0.027
  23 105 TRUE 0.43 0.025
  24 115 TRUE 0.40 0.022", header=TRUE)
  
  ggplot(prof, aes(colour = prop, fill = prop)) + 
    geom_ribbon(aes(x = depth, ymin = mean-error, ymax = mean+error), 
    alpha = 0.6, colour = NA)
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/JS9Ia.jpg" alt="enter image description here"></p>