Home | Resources | Services | Hosting | Publications | Collaboration | Joining CERL | About CERL |

123 Coded Data Field: Latitude and Longitude (O;NR)

Field Definition and Scope

This field contains the geographic co-ordinates of the place described in the given record. It may occur only in records for place names.

In accordance with Unimarc Authorities, the format provides for referencing a rectangular shape, although it is customary in the CERL Thesaurus to reference places as a single point.

Application of Content Designators

Indicators

both indicator positions are undefinded and therfore left blank

Subfields


$d Westernmost Longitude (NR)
The longitude of the western boundary of the rectangle circumscribing the described place

$e Easternmost Longitude (NR)
The longitude of the eastern boundary of the rectangle circumscribing the described place

$f Northernmost Latitude (NR)
The latitude of the northern boundary of the rectangle circumscribing the described place

$g Southernomst Latitude (NR)
The latitude of the southern boundary of the rectangle circumscribing the described place

Each subfield is fixed at 8 characters and contains the following data:

Character PositionDefinitionContent
0A one-character code indicating the Hemispherew = west
e = east
n = north
s = south
1-3Degree3 numeric characters, right justified and zerofilled
4-5Minute2 numeric characters, right justified and zerofilled
6-7Second2 numeric characters, right justified and zerofilled

Input Conventions

When the co-ordinates for a map or plan are given in terms of a centre point rather than outside limits, the longitude and latitude that form the central axes are each recorded twice, in subfields $d and $e (longitude) and subfields $f and $g (latitude).

Mapping

To create an RDF description, the following mapping is applied

$dwgs84_pos:long
$fwgs84_pos:lat

Mapping Example

<rdf:Description rdf:about="http://thesaurus.cerl.org/cnl00016172">
   <wgs84_pos:lat>48.8700</wgs84_pos:lat>
   <wgs84_pos:long>2.3300</wgs84_pos:long>
</rdf:Description>

Example

 123 ##$de0095625$ee0095625$fn0513143$gn0513143 
 215 #1$aGöttingen$cDE$5GYMG
 
 

Internal Representation

{"data": {"location": {"point": {
    "long": "Longitude ($d)",
    "lat": "Latitude ($f)"
}}}}
This website uses cookies to ensure you get the best experience from it.
 resources/cerl_thesaurus/editing/format/123.txt · Last modified: 2017/07/18 12:30 by jahnke

 

 

Recent changes RSS feed Valid XHTML 1.0 Driven by DokuWiki