mapvar: Map a state-level numerical variable

In OIdata: Data sets and supplements (OpenIntro)

Description

Generate a map of a state-level numerical variable

Usage

 mapvar(val, abbr, col = 1:3, Legend="") 

Arguments

val	A vector of numerical values.
abbr	The state abbreviations that correspond to each of the numerical values.
col	A numerical vector of length 3 with positive entries. The numbers correspond to weightings of red, green, and blue in the final map.
Legend	Legend name as a character string.

Details

Relies heavily on the map function. See the unemployment example for sample code that may help explain how the mapvar function works.

Value

A data frame of the state.fips data set together with a standardized form of the values.

Author(s)

David Diez

References

OpenIntro, openintro.org

See Also

state

Examples

data(state)
mapvar(state$unempl, state$abbr, 3:1, Legend="Unemployment (%)")

mapvar(state$soc_sec, state$abbr, 1:3, Legend="Social Security (%)")

DC         <- state$state == "District of Columbia"
murder     <- state$murder
murder[DC] <- NA
mapvar(murder, state$abbr, c(3,2,2), Legend="Murders per 100k")

mapvar(state$nuclear, state$abbr, c(2,3,2), Legend="Nuclear Energy (%)")

OIdata documentation built on May 2, 2019, 2:14 p.m.