Mapping the area reachable from a point within set travel times to define a realistic catchment; more accurate than simple radius rings in congested cities like Cairo and Lagos.
Related terms
- Geocoding
Converting addresses into map coordinates for spatial analysis.
- GIS
Geographic Information System - software for mapping and analysing spatial data.
- Heat map
A visualisation showing the intensity of a variable across a geographic area.
- Hedonic pricing
A model that estimates value from the contribution of individual property attributes.
- Isochrone
A line on a map connecting points reachable within the same travel time.
- Location intelligence
The discipline of deriving business decisions from spatial data, combining GIS, demographics, and mobility; increasingly used to site retail and residential sc…
- Median vs mean
The median is the middle value and the mean is the arithmetic average; in skewed property markets the median resists distortion from a few ultra-prime sales, s…
- Outlier
A data point far from the rest, which may be an error or the most informative record.