9.1 Space and Time

9.1.1 Historical

Ptolemy’s world map in his masterpiece Geography (reproduction shown above, Wikipedia)

9.1.2 Base R

us_states2163 = st_transform(us_states, "EPSG:2163") # from chapter 5
plot(us_states2163)

9.1.3 Science Communication

Professor Cynthia A Brewer

“…poor map making can hinder the communication of results (Brewer 2015)”

Brewer is also renowned for the Color Brewer ideas (faculty website)

9.1.4 Ease of Use

While software such as ArcGIS or QGIS may be preferred by professional analysts, R packages such as tmap are easier for introductory endeavors

• accessible
• citizen science