SpatialData.gov.scot
Census 1991 - Output Area Centroids
This dataset shows the 1991 Census Output Areas (OAs) Household Weighted Centroids.
An individual Output Area generally covers a sufficiently small area (subject to meeting minimum population / household counts) so that user defined or ad-hoc areas can be created while maintaining a sufficient level of quality. National Records of Scotland (NRS) produces only one set of OAs and creates all other output geographies using the OA as the building brick. Each OA is assigned to an area in a higher geography by first selecting one of the postcodes in the OA as a ‘master’ postcode. The OA inherits all of the characteristics of the master postcode including its assignments to higher areas and its grid reference.
The master postcode was selected using an algorithm which calculates the postcode centroid within an OA which has grid references closest to the household-weighted centre of the OA.
Revisions and Corrections
Correction to 1991 Output Area Household Weighted Centroids
An anomaly was discovered when converting the Ordnance Survey Tile Reference to easting and northing where for some records, the centroid for the Output Area was not falling within the boundary of the Output Area.
Default
Identification info
- Metadata Language
- English
- Character set
- UTF8
- Dataset Reference Date (Publication)
- 1993-02-13
- Dataset Reference Date (Creation)
- 1993-02-13
- Identifier
- www.nrscotland.gov.uk / OutputArea1991_HWC
- Maintenance and update frequency
- Not planned
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GEMET - INSPIRE themes, version 1.0
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-
Statistical units
-
-
GEMET - Concepts, version 2.4
-
-
census survey
-
statistical data
-
-
IPSV Subjects List
-
-
Censuses
-
Boundaries
-
- Limitations on Public Access
- Other restrictions
- Other constraints
- No limitations to public access
- Use constraints
- Other restrictions
- Other constraints
- Open Government Licence
- Other constraints
-
The following statements must be used when reproducing or using this material: Copyright National Records of Scotland, contains Ordnance Survey data © Crown copyright and database right (insert year).
- Spatial representation type
- Vector
- Denominator
- 10000
- Topic category
-
- Boundaries
- Code
- S92000003
))
Temporal reference
Temporal extent
Temporal extent
- Code
- EPSG:4258
- Code
- EPSG:27700
Distribution Information
Data format
- Data format
-
Name Version WMS
1.3.0
WFS
2.0.0
ESRI Shapefile
1.0
Transfer options
- Resource Locator
-
Protocol Resource Locator Name OGC:WMS
https://maps.gov.scot/server/services/NRS/Census1991/MapServer/WMSServer? OutputAreaCent1991
OGC:WFS
https://maps.gov.scot/server/services/NRS/Census1991/MapServer/WFSServer? CEN1991:OutputAreaCent1991
WWW:LINK-1.0-http--link
https://www.nrscotland.gov.uk/statistics-and-data/geography/our-products/census-datasets/1991-census National Records of Scotland website
Data quality info
- Quality Scope
- Dataset
- Statement
-
This dataset shows the 1991 Census Output Areas (OAs) Household Weighted Centroids.
An individual Output Area generally covers a sufficiently small area (subject to meeting minimum population / household counts) so that user defined or ad-hoc areas can be created while maintaining a sufficient level of quality. National Records of Scotland (NRS) produces only one set of OAs and creates all other output geographies using the OA as the building brick. Each OA is assigned to an area in a higher geography by first selecting one of the postcodes in the OA as a ‘master’ postcode. The OA inherits all of the characteristics of the master postcode including its assignments to higher areas and its grid reference.
The master postcode was selected using an algorithm which calculates the postcode centroid within an OA which has grid references closest to the household-weighted centre of the OA.
Revisions and Corrections
Correction to 1991 Output Area Household Weighted Centroids
An anomaly was discovered when converting the Ordnance Survey Tile Reference to easting and northing where for some records, the centroid for the Output Area was not falling within the boundary of the Output Area.
Metadata
- File identifier
- be9c94dc-1581-45cb-9f09-9271713b5a61 XML
- Metadata Language
- English
- Resource type
- Dataset
- Hierarchy level name
-
dataset
- Metadata Date
- 2023-06-14T11:39:42
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
Point of contact
- Organisation name
-
National Records of Scotland
- Delivery point
-
General Register House, 2 Princes Street
- City
-
Edinburgh
- Administrative area
-
Scotland
- Postal code
-
EH1 3YY
- Country
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United Kingdom
- Electronic mail address
-
geographycustomerservices@nrscotland.gov geographycustomerservices@nrscotland.gov.uk
- Role
- Point of contact