london_area

london_a

london_cent

london_c

london_cent_lonlat

london_area_lonlat

<p>`london_a()` and `london_c()` return the city boundaries and centre
  point of London, respectively.</p>

datasets

Functions, documentation and example data to help divide
geographic space into discrete polygons (zones).
The package supports new zoning systems that are documented in the
accompanying paper,
"ClockBoard: A zoning system for urban analysis",
by Lovelace et al. (2022) <doi:10.5311/JOSIS.2022.24.172>.
The functions are motivated by research into the merits of different zoning systems
(Openshaw, 1977) <doi:10.1068/a090169>. A flexible ClockBoard zoning system is
provided, which breaks-up space by concentric rings
and radial lines emanating from a central point.
By default, the diameter of the rings grow according to the triangular number sequence
(Ross & Knott, 2019) <doi:10.1080/26375451.2019.1598687> with the first 4 doughnuts
(or annuli) measuring 1, 3, 6, and 10 km wide.
These annuli are subdivided into equal segments (12 by default), creating the
visual impression of a dartboard. Zones are labelled according to
distance to the centre and angular distance from North, creating a simple
geographic zoning and labelling system useful for visualising geographic
phenomena with a clearly demarcated central location such as cities.

london_area: Region representing London in projected coordinate system

Description

Usage

Arguments

Examples