To cite package ‘pycnogrid’ in publications use:

  Higgins C (2026). _pycnogrid: Flexible Pycnophylactic Interpolation
  to Discrete Global and Local Grid Systems_. R package version 0.2.0,
  <https://github.com/higgicd/pycnogrid>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pycnogrid: Flexible Pycnophylactic Interpolation to Discrete Global and
Local Grid Systems},
    author = {Christopher Higgins},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://github.com/higgicd/pycnogrid},
  }