References

Massicotte, P., & South, A. (2026). Rnaturalearth: World map data from natural earth. https://doi.org/10.32614/CRAN.package.rnaturalearth

Pebesma, E. (2018). Simple Features for R: Standardized Support for Spatial Vector Data. The R Journal, 10(1), 439–446. https://doi.org/10.32614/RJ-2018-009

Pebesma, E., & Bivand, R. (2023). Spatial Data Science: With applications in R. Chapman and Hall/CRC. https://doi.org/10.1201/9780429459016

R Core Team. (2026). R: A language and environment for statistical computing. R Foundation for Statistical Computing. https://doi.org/10.32614/R.manuals

Šavrič, B., Patterson, T., & Jenny, B. (2019). The equal earth map projection. International Journal of Geographical Information Science, 33, 454–465. https://doi.org/10.1080/13658816.2018.1504949

Wickham, H. (2016). ggplot2: Elegant graphics for data analysis. Springer-Verlag New York. https://ggplot2.tidyverse.org