Michael Toth shows us how to ensure we use horizontal text labels in ggplot:
There are several things we could do to improve this graph, but in this guide let’s focus on rotating the y-axis label. This simple change will make your graph so much better. That way, people won’t have to tilt their heads like me to understand what’s going on in your graph:
It may not seem like much when you’re creating the visual, but it can make a difference for a viewer.