To cite package ‘fillpattern’ in publications use:

  Smith D (2026). _fillpattern: Patterned Fills for 'ggplot2' and
  'grid' Graphics_. R package version 1.0.4,
  <https://github.com/cmmr/fillpattern>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fillpattern: Patterned Fills for 'ggplot2' and 'grid' Graphics},
    author = {Daniel P. Smith},
    year = {2026},
    note = {R package version 1.0.4},
    url = {https://github.com/cmmr/fillpattern},
  }
