zip_map: Create a map visualizing US ZIP codes with sensible defaults.

In trulia/choroplethr: Simplify the Creation of Choropleth Maps in R

Description

ZIPs are rendered as scatterplots against and outline of US States.

Usage

zip_map(df, title = "", legend = "", buckets = 7, zoom = NULL)

Arguments

df	A data.frame with a column named "region" and a column named "value". Values of the "region" column must be valid 5-digit zip codes.
title	An optional title for the map.
legend	An optional name for the legend.
buckets	The number of equally sized buckets to places the values in. A value of 1 will use a continuous scale, and a value in [2, 9] will use that many buckets.
zoom	An optional vector of states to zoom in on. Elements of this vector must exactly match the names of states as they appear in the "region" column of ?state.regions.

Note

The longitude and latitude of ZIPs come from the "zipcode" package. The state outlines come from ?state.map.

Examples

# demonstrate default parameters - visualization using 7 equally sized buckets
data(df_pop_zip)
zip_map(df_pop_zip, title="US 2012 ZCTA Population Estimates", legend="Population")

# demonstrate continuous scale and zoom
data(df_pop_zip)
zip_map(df_pop_zip,
        title="US 2012 ZCTA Population Estimates",
        legend="Population",
        buckets=1,
        zoom=c("california", "oregon", "washington"))

trulia/choroplethr documentation built on June 1, 2019, 1:52 a.m.