geo_select_aeq

geo_select_aeq.sf

geo_select_aeq.sfc

Returns a CRS string for an Azimuthal Equidistant projection centered on the midpoint of an sf object's coordinates.

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.

Robin Lovelace

zonebuilder

Create and Explore Geographic Zoning Systems

Martijn Tennekes

geo_select_aeq function

<dl><dt>shp</dt>
<dd>An sf object.</dd></dl>

Arguments

Azimuthal Equidistant Projection — geo_select_aeq

<dl>

<dt>shp</dt>
<dd>An sf object.</dd>

</dl>

geo_select_aeq: Azimuthal Equidistant Projection

Description

Usage

Value

Arguments

Details