title: How to create a stacked and grouped bar chart from two data frames?
body: <p>I have a stacked barchart that looks like <a href="https://i.stack.imgur.com/WXtPb.png" rel="nofollow noreferrer">this</a>.</p>
  
  <p>If I have a second dataframe that has the same layout as the one that created the plot, and I want to group both datasets by position while still keeping the stacked percentages, how would I go about this. I'm not sure how to do it in ggplot2</p>