References

Kahle, David, Hadley Wickham, and Scott Jackson. 2023. Ggmap: Spatial Visualization with Ggplot2. https://github.com/dkahle/ggmap.

Wickham, Hadley, Mara Averick, Jennifer Bryan, Winston Chang, Lucy D’Agostino McGowan, Romain François, Garrett Grolemund, et al. 2019. “Welcome to the tidyverse.” Journal of Open Source Software 4 (43): 1686. https://doi.org/10.21105/joss.01686.