R : Using USABoundaries
Using ggplot with the USAboundaries and USAboundariesData packages
map projections with ggplot
Polygon maps with ggplot
USA as never seen it before | relaxing video
D-RUG: R デモの SF
Demonstrators in America stormed the Congress building and shot police
3.1: Data Visualization: Mapping Intro (Part 1)
Part 4
なぜR?ウェビナー 004 - Robin Lovelace + Jakub Nowosad - R 空間の最近の変更
GIS: R sf aggregate polygons at various geographic levels