ut_tract_choropleth: Create a choropleth of US Census Tracts in Utah

In juliasilge/choroplethrUTCensusTract: Shapefile, Metadata, and Visualization Functions for US Census Tracts in Utah

Description

Create a choropleth of US Census Tracts in Utah

Usage

ut_tract_choropleth(df, title = "", legend = "", num_colors = 7,
  tract_zoom = NULL, county_zoom = NULL, reference_map = FALSE)

Arguments

df	A data frame with a column named "region" and a column named "value". Elements in the "region" column must exactly match how census tracts are labelled in the "region" column in ?ut.tract.regions
title	An optional title for the map.
legend	An optional name for the legend.
num_colors	The number of colors on the map. A value of 1 will use a continuous scale. A value in [2, 9] will use that many colors.
tract_zoom	An optional vector of tracts to zoom in on. Elements of this vector must exactly match the names of tracts as they appear in the "region" column of ?ut.tract.regions.
county_zoom	An optional vector of county FIPS codes to zoom in on. Elements of this vector must exactly match the names of counties as they appear in the "county.fips.numeric" column of ?ut.tract.regions.
reference_map	If true, render the choropleth over a reference map from Google Maps.

See Also

https://www.census.gov/geo/reference/gtc/gtc_ct.html for more information on Census Tracts

Examples

# zoom in on Salt Lake, which has FIPS code 49035
data(df_pop_ut_tract)
ut_tract_choropleth(df_pop_ut_tract,
                    title  = "2013 Salt Lake Census Tract\n Population Estimates",
                    legend = "Population",
                    county_zoom = 49035)                  

# add a reference map
ut_tract_choropleth(df_pop_ut_tract,
                    title  = "2013 Salt Lake Census Tract\n Population Estimates",
                    legend        = "Population",
                    county_zoom   = 49035,
                    reference_map = TRUE)                  

## Not run: 

ut_tract_choropleth(df_pop_ut_tract,
                    title  = "2013 Utah Census Tract\n Population Estimates",
                    legend = "Population")

# 2013 per capita income estimate
data(df_ut_tract_demographics)
df_ut_tract_demographics$value = df_ut_tract_demographics$per_capita
ut_tract_choropleth(df_ut_tract_demographics,
                    title         = "2013 Salt Lake Census Tract\n Per Capita Income",
                    legend        = "Income",
                    num_colors    = 4,
                    county_zoom   = 49035,
                    reference_map = TRUE)

## End(Not run)

juliasilge/choroplethrUTCensusTract documentation built on May 20, 2019, 6:22 a.m.