Georeferencing, Geocoding
and Address Matching
Chapter 5 of ArcView Methods…
pp. 174-175 of ArcGIS Methods…
GEO 265 - GIS Practicuum
Georeferencing
essential in GIS, since all information must be
linked to the Earth’s surface
Georeferencing must be:
Unique, linking information to exactly one location
Shared, so different users understand the meaning
of a georeference
Persistent through time, so today’s georeferences
are still meaningful tomorrow
Geocoding
Geocoding is the conversion of
georefencing (spatial information) into
digital form.
Geocoding involves capturing the map,
and sometimes also capturing the
attributes.
Geocoding methods for maps
Digitizing
Scanning
Field Data Collection
Vector and Raster
In ArcView Feature Data Source, Image
Data Source
Often involves address matching
Address Matching
A system for giving a
street address a
geographic coordinate
Measure a distance
along an arc from a
fixed point, most
often an intersection
Lab Notebook Tips - ArcView
Set Working Directory
View Properties
Changing Theme Names
Display Attribute Table
Promote Selected Records
Legend Editor: Symbols, colors
Layouts and “6 Cartographic Elements”