In ryanwyg/Chicago-Data-Package: Contains some Chicago-relevant datasets, primarily sf objects.

knitr::opts_chunk$set(
  collapse = TRUE
  # comment = "#>"
)

This is a tutorial using the ChicagoPackage. This tutorial mainly concerns the shapes in the package, namely the community areas, police wards and beats, and cencus tracts.

### load the relevant packages
library(ChicagoPackage)
library(tmap)
library(sf)
library(rgeos)
library(rgdal)
library(spdep)
library(dplyr)

This Chicago Data Package contains different shapes, and this tutorial will show you what each individual shape looks like and how you might want to use them.

Community Areas

# Seeing the properties of the community area dataset
head(ca_boundaries)

# Plotting community areas, by the area
tm_shape(ca_boundaries) + tm_polygons("shape_area", palette = "Greens") +
  tm_layout(main.title = "Community Areas")

Census Tracts

# Again, properties
head(census_tracts_2010)

# Plotting census tracts, by their community areas
tm_shape(census_tracts_2010) + tm_polygons("commarea", palette = "Set3") +
  tm_layout(main.title = "2010 Census Tracts")
# We notice that there is a warning message, saying that there are more levels of community areas than the color palette, which is fine. As a result, some areas are grouped using the same color, resulting in larger areas.

Police Beats

# Same procedures as before
head(police_beats2019)
tm_shape(police_beats2019) + tm_polygons("beat", palette = "Accent") +
  tm_layout(main.title = "Police Beats")

Police Wards

# Same procedures as before
head(wards2019)
tm_shape(wards2019) + tm_polygons("ward", palette = "Paired") +
  tm_layout(main.title = "Police Wards")

ryanwyg/Chicago-Data-Package documentation built on June 22, 2020, 2:55 p.m.