mUSMap takes in one dataframe that includes information
about different US states. It merges this dataframe with a dataframe
that includes geographical coordinate information. Depending on the
arguments passed, it returns this data or a ggplot object constructed
with the data.
Usage
mUSMap(
data = NULL,
key,
fill = NULL,
plot = c("borders", "frame", "none"),
style = c("compact", "real")
)
Arguments
data
A dataframe with US states as cases
key
The column name in the data that holds the unique
names of each state
fill
A variable in the data used to specify the fill
color of states in the map (note: if fill is not null, then
plot cannot be set to "none")
plot
The plot desired for the output. plot = "none"
returns the merged data that is the result of merging the data
and the dataframe with the geographical coordinate information;
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 states
style
The style in which to display the map. compact gives
a polyconic projection with Alaska and Hawaii on the lower left corner;
real gives the real size and position of all states without any
projection.