Goodwin, Carl. 2024. Arbitrary shapes for {ggplot2}. https://cgoo4.github.io/ggfoundry/

Corresponding BibTeX entry:

  @Manual{,
    title = {Shape Foundry for {ggplot2}},
    author = {Carl Goodwin},
    year = {2024},
    url = {https://cgoo4.github.io/ggfoundry/},
  }