I’m familiar enough with ggplot that I can make a quick plot pretty easily in most cases.1 But when it comes to fine-tuning the various plot aesthetics, like adjusting the legend position or rotating axis tick labels, I always have to look them up. Today, I will be writing about one of these pesky things: looking up the point shape options for geom_point. The available documentation for this isn’t great, so I thought it would be worthwhile to write my own reference.
6.4 A rendezvous with popular geoms
Albert Rapp - Storytelling in ggplot using rounded rectangles
28 Graphics for communication
r - ggplot2 - filling in manual shapes with manual colors - Stack Overflow
Chapter 1 Communication
ggplot2 point shapes - Easy Guides - Wiki - STHDA
r - How to set ggplot2 default point shapes inside aes()? - Stack Overflow
Color, line type, and point shape in ggplot2 diagrams
ggplot2 Quick Reference: shape Software and Programmer Efficiency Research Group
