#' Outline of US states and equivalents
#'
#' Data from shapefiles provided by the Census Bureau’s MAF/TIGER geographic database at
#' \url{https://www.census.gov/geo/maps-data/data/cbf/cbf_state.html}. State outlines are based
#' on the 1:20m resolution level. Internal points, divisions and regions are based on TIGER/Line Shapefiles for states and equivalents in the 2016 release.
#' @format both objects are data frames consisting of variables of length ~13k:
#' \itemize{
#' \item long: geographic longitude
#' \item lat: geographic latitude
#' \item order: order of locations
#' \item piece: positive integer value, one for each separate area/island of a state
#' \item id: integer value uniquely identifying each state
#' \item group: character value - composite of id and piece, uniquely identifying each part of each state
#' \item STATEFP: FIPS state code
#' \item STATENS: GNIS state code
#' \item AFFGEOID: American FactFinder state code
#' \item GEOID: GEOID state code
#' \item STUSPS: US state code
#' \item NAME: name of state or state equivalent
#' \item ALAND: land area of the state/state equivalent in square meters
#' \item AWATER: water area of the state/state equivalent in square meters
#' \item REGION: integer of US region
#' \item REGION.NAME: name of US region
#' \item DIVISION: integer of US division
#' \item DIVISION.NAME: name of US division
#' \item INTPTLAT: latitude of interior point
#' \item INTPTLON: longitude of interior point
#' }
#' @importFrom magrittr %>%
#' @examples
#' states %>% ggplot(aes(x = long, y = lat)) +
#' geom_path(aes(group = group)) +
#' geom_point(data = states %>% map_unif(n = 1000), colour = "red", size = 0.25)
#'
#' inset %>% ggplot(aes(x = long, y = lat)) +
#' geom_path(aes(group = group)) +
#' geom_point(data = inset %>% map_unif(n = 1000), colour = "red", size = 0.25)
#'
#' division %>% ggplot(aes(x = long, y = lat)) +
#' geom_path(aes(group = group)) +
#' geom_point(data = division %>% map_unif(n = 1000), colour = "red", size = 0.25)
"states"
#' @rdname states
"inset"
#' @rdname states
"division"
#' Outline of US counties
#'
#' Data from shapefiles provided by the Census Bureau’s MAF/TIGER geographic database at
#' \url{https://www.census.gov/geo/maps-data/data/cbf/cbf_state.html}. County outlines are based
#' on the 1:20m resolution level. Divisions and regions are based on TIGER/Line Shapefiles for states and equivalents in the 2016 release.
#' @format both objects are data frames consisting of variables of length ~50k:
#' \itemize{
#' \item long: geographic longitude
#' \item lat: geographic latitude
#' \item order: order of locations
#' \item hole: logical vector
#' \item piece: positive integer value, one for each separate area/island of a county
#' \item id: integer value uniquely identifying each county
#' \item group: character value - composite of id and piece, uniquely identifying each part of each county
#' \item STATEFP: FIPS state code
#' \item COUNTYFP: FIPS county code
#' \item COUNTYNS: GNIS county code
#' \item AFFGEOID: American FactFinder county code
#' \item GEOID: GEOID county code
#' \item NAME: name of county
#' \item ALAND: land area of the county in square meters
#' \item AWATER: water area of the county in square meters
#' \item STATE: name of the state
#' \item STUSPS: US state code
#' \item REGION: integer of US region
#' \item DIVISION: integer of US division
#' }
#' @importFrom magrittr %>%
#' @examples
#' \dontrun{
#' library(ggplot2)
#' library(magrittr)
#' counties %>% ggplot(aes(x = long, y = lat)) +
#' geom_path(aes(group = group))
#'
#' counties_inset %>% ggplot(aes(x = long, y = lat)) +
#' geom_path(aes(group = group))
#' }
"counties"
#' @rdname counties
"counties_inset"
#' Crimes in the US since 1960
#'
#' where does this dataset come from?
#' @format data frame of seven variables and about 23k rows:
#' \itemize{
#' \item State: name of the state
#' \item Abb: two-letter state abbreviation
#' \item Year: year of the record
#' \item Population: state population
#' \item Type: type of crime committed
#' \item Type2: type of crime committed distinguishing violent and property crimes
#' \item Number: number of crimes
#' }
#' @importFrom magrittr %>%
#' @examples
#' library(magrittr)
#' crimes %>% dplyr::filter(Type=="Murder") %>%
#' ggplot(aes(x = Year, y = Number/Population)) +
#' geom_line(aes(group = State))
"crimes"
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