ggplot gallery: dumbbell plot

[OskaratOmni]

Reviewer comments:

Add a title

This one was really hard to read.

Will need to make the dots much bigger.

The dots with the same values aren’t aligned

Show how to add a legend with color codes

[dgkeyes]

All set:

I didn't add a legend, but added the colors in the title instead.

You can see it in action here: https://stupendous-biscuit-9f1c75.netlify.app/ggplot/graph_dumbbell_plot.html