geom_boundary: Draw census boudaries on ggmap

In GL-Li/ggtiger: Draw and fill in TIGER boundaries on ggmap

Description

Draw census boudaries on ggmap

Usage

geom_boundary(geography, data_fill = NULL, year = 2016, states = NULL,
  counties = NULL, N = 100, mapping = NULL, data = NULL,
  geom = "polygon", position = "identity", na.rm = FALSE,
  show.legend = NA, inherit.aes = TRUE, ...)

Arguments

geography	geography of which boudaries to be drawn. Currently take "state", "county", "county subdivision", "tract", "block group".
data_fill	data frame to fill in the boundaries. It has GEOID as the first column and the values to fill as the second column.
year	year of the shape files updated.
states	abbreviation of a state within which boudaries are drawn, such as "RI".
counties	vector of county names of the state, such as c("providence", "kent")
N	integer when state is NULL, N x N grid points on the view of map are used to determine the states and counties within the view.
mapping	same as those in ggplot functions, typically inherited from ggmap()
data	data typically inherited from ggmap().
geom	same as those in ggplot2 functions but should be uisng "polygon".
position	same as those in ggplot2 functions.
na.rm	same as those in ggplot2 functions.
show.legend	same as those in ggplot2 functions.
inherit.aes	same as those in ggplot2 functions.
...	same as those in ggplot2 functions.

Value

a ggplot2 object

GL-Li/ggtiger documentation built on Aug. 4, 2020, 6:32 p.m.