To cite package ‘nychex’ in publications use:

  Healy K (2026). _nychex: Tessellated Hex Maps for New York City
  Geographies_. R package version 0.3.0,
  <https://github.com/kjhealy/nychex>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {nychex: Tessellated Hex Maps for New York City Geographies},
    author = {Kieran Healy},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://github.com/kjhealy/nychex},
  }