11) Maps 1

📖 Lecture

Many data sets (e.g. storms data set from "dplyr") contain geographical variables such as longitude and latitude that can be visualized with a map. This week we take "ggplot2" a further step to learn how to plot basic maps with some dedicated packages such as "sf" and "rnaturalearth". Likewise, we’ll also discuss how to produce web-interactive maps with the package "leaflet".

📚 Reading

Read chapters 17, 18, and 19 of “Tidy Hurricanes”:

• https://www.gastonsanchez.com/R-tidy-hurricanes/5-01-maps-intro.html
• https://www.gastonsanchez.com/R-tidy-hurricanes/5-03-maps-sf.html
• https://www.gastonsanchez.com/R-tidy-hurricanes/5-04-maps-leaflet.html

🔬 Lab

• Graphing basic maps with "ggplot2" & "sf".
• Making web-interactive maps with "leaflet".

🎯 Objectives

• Explain the concept of a “simple feature”
• Describe how to use the layer geom_sf()
• Map latitude and longitude coordinates in a geom_sf() layer.

🔔 Assignments

• Shiny App2, due 04/12