An important bar in the graph

Hi! Welcome to RStudio Community!

Ideally you'd give us a reproducible example (reprex) of your issue as a starting point. A reprex makes it much easier for others to understand your issue and figure out how to help. A lack of a reprex just makes it much less likely others will reply.

Your reprex typically includes a toy data set, the code you have tried, any error messages you are getting, and your desired output.