makeMap: Make a map with 'ggplot2'

In mosaic: Project MOSAIC Statistics and Mathematics Teaching Utilities

Make a map with ggplot2

Description

makeMap takes in two sources of data that refer to geographical regions and merges them together. Depending on the arguments passed, it returns this merged data or a ggplot object constructed with the data.

Usage

makeMap(
  data = NULL,
  map = NULL,
  key = c(key.data, key.map),
  key.data,
  key.map,
  tr.data = identity,
  tr.map = identity,
  plot = c("borders", "frame", "none")
)

Arguments

data	A dataframe with regions as cases
map	An object that can be fortified to a dataframe (ex: a dataframe itself, or a SpatialPolygonsDataFrame)
key	The combination of key.data and key.map
key.data	The column name in the data that holds the unique names of each region
key.map	The column name in the map that holds the unique names of each region
tr.data	A function of the transformation to be performed to the key.data column
tr.map	A function of the transformation to be performed to the key.map column
plot	The plot desired for the output. plot = "none" returns the merged data that is the result of merging the data and map together; plot="frame" returns an empty (unplottable) ggplot object; plot = "border" (the default) returns a ggplot object with one geom_polygon layer that shows the borders of the regions.

mosaic documentation built on May 29, 2024, 5:27 a.m.