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.
Color, line type, and point shape in ggplot2 diagrams
28 Graphics for communication
r - Displaying all shapes in size legend geom_point ggplot2 - Stack Overflow
Shape characteristic in ggplot2 - tidyverse - Posit Community
ggplot2 point shapes - Easy Guides - Wiki - STHDA
r - Create a new custom point shape for ggplot2 - Stack Overflow
r - Rectangular ggplot2 geom_point shape - Stack Overflow
Albert Rapp - Storytelling in ggplot using rounded rectangles
5.3 Using Different Point Shapes R Graphics Cookbook, 2nd edition
Albert Rapp - 5 Powerful ggplot2 Extensions
Diagnosing the accuracy of your linear regression in R - Storybench