R/county.R

In choroplethrMaps: Contains Maps Used by the 'choroplethr' Package

#' Map of the counties of each of the 50 US states plus the district of columbia.
#' 
#' A data.frame which contains a map of all 50 US States plus 
#' the District of Columbia.  The shapefile
#' was modified using QGIS in order to 1) remove
#' Puerto Rico 2) remove islands off of Alaska that
#' crossed the antimeridian 3) renamed the county "Dona Ana" (which is properly written with a tilde over the
#' first "n") to "Dona Ana" because R CMD check emits a warning if data contains non-ASCII characters 4) some columns were added for convenience.
#'
#' @docType data
#' @name county.map
#' @usage data(county.map)
#' @references Taken from the US Census 2010
#' Cartographic Boundary shapefiles page (https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html) in May 2014.
#' The resolutions is 20m (20m = 1:20,000,000). 
#' @examples
#' \dontrun{
#' # render the map with ggplot2
#' library(ggplot2)
#' 
#' data(county.map)
#' ggplot(county.map, aes(long, lat, group=group)) + geom_polygon()
#' }
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#' A data.frame consisting of the name of each region in the map county.map as well as their FIPS codes and state names.
#' 
#' choroplethr requires you to use the naming convention in the "region" column (i.e. the numeric version of 
#' the FIPS code - no leading zero).
#' 
#' @seealso ?county.map
#'  
#' @docType data
#' @name county.regions
#' @usage data(county.regions)
#' @examples
#' data(county.regions)
#' head(county.regions)
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