openintro (version 2.0.0)

london_boroughs: London Borough Boundaries

Description

This dataset contains the coordinates of the boundaries of all 32 boroughs of the Greater London area.

Usage

london_boroughs

Format

A data frame with 45341 observations on the following 3 variables.

borough

Name of the borough.

x

The "easting" component of the coordinate, see details.

y

The "northing" component of the coordinate, see details.

Details

Map data was made available through the Ordnance Survey Open Data initiative. The data use the National Grid coordinate system, based upon eastings (x) and northings (y) instead of longitude and latitude.

The name variable covers all 32 boroughs in Greater London: Barking & Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith & Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington & Chelsea, Kingston, Lambeth, Lewisham, Merton, Newham, Redbridge, Richmond, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster

See Also

london_murders

Examples

# NOT RUN {
library(dplyr)
library(ggplot2)

# Calculate number of murders by borough
london_murders_counts <- london_murders %>%
  group_by(borough) %>%
  add_tally()

london_murders_counts

# }
# NOT RUN {
# Add number of murders to geographic boundary data
london_boroughs_murders <- inner_join(london_boroughs, london_murders_counts, by = "borough")

# Map murders
ggplot(london_boroughs_murders) +
  geom_polygon(aes(x = x, y = y, group = borough, fill = n), colour = "white") +
    scale_fill_distiller(direction = 1) +
  labs(x = "Easting", y = "Northing", fill = "Number of murders")
# }