Shapes and line types
ggplot2 point shapes - Easy Guides - Wiki - STHDA
r - Changing shapes used for scale_shape() in ggplot2 - Stack Overflow
r - ggplot2 - filling in manual shapes with manual colors - Stack Overflow
Aesthetic specifications • ggplot2
r - Assigning 40 shapes or more in scale_shape_manual - Stack Overflow
Scales for shapes, aka glyphs — scale_shape • ggplot2
r - Manual change of shape in ggplot2 changes colors from solid to outline? - Stack Overflow
Chapter 22 Bivariate ggplot2 Scatterplots to Visualize Relationships Between Variables | Reproducible Medical Research with R
r - ggplot multiple manual shape series - Stack Overflow
Shapes and line types
r - Add multiple shape legends in ggplot and overlaying shapes - Stack Overflow
ggplot2 point shapes - Easy Guides - Wiki - STHDA
Point Shape Options in ggplot - Albert's Blog
Request: support providing shapes as names rather than integers · Issue #2075 · tidyverse/ggplot2 · GitHub
ggplot2 point shapes - Easy Guides - Wiki - STHDA
Adding manual legend to ggplot2 - tidyverse - RStudio Community
Colours and Shapes :: Environmental Computing
Point Shape Options in ggplot - Albert's Blog
5.3 Using Different Point Shapes | R Graphics Cookbook, 2nd edition
Request: support providing shapes as names rather than integers · Issue #2075 · tidyverse/ggplot2 · GitHub
Controlling legend appearance in ggplot2 with override.aes | R-bloggers
ggplot2 point shapes - Easy Guides - Wiki - STHDA
Controlling legend appearance in ggplot2 with override.aes | R-bloggers
Shape characteristic in ggplot2 - tidyverse - RStudio Community
