Smith (2023). PlotTools: Add continuous legends to plots. Comprehensive R Archive Network,<doi:10.5281/zenodo.7803390>

Corresponding BibTeX entry:

  @Article{Smith2023,
    journal = {Comprehensive R Archive Network},
    author = {Martin R. Smith},
    title = {PlotTools: Extended Tools for Continuous Legends, Polygon
      Manipulation, and Visual Display of Categorical Data},
    year = {2023},
    doi = {10.5281/zenodo.7803390},
  }