Mapping in ggplot2

Elliot Palmer

1 minute read

library(ggplot2)
library(dplyr)
## Warning: package 'dplyr' was built under R version 3.4.4
## 
## Attaching package: 'dplyr'
## The following objects are masked from 'package:stats':
## 
##     filter, lag
## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union
data("USArrests")

state_name_to_abbrev <- data.frame(
  abbrev = state.abb,
  name = state.name
)

head(USArrests)
##            Murder Assault…