CENSUS GEOGRAPHY WORKSHOP Tim McMonagle Geography Los Angeles Regional Office 1.
An Introduction to 2011 Census Geography
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Transcript of An Introduction to 2011 Census Geography
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An introduction to 2011 Census geography
James Crone
Webinar
17 May 2013
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Welcome
An introduction…
James CroneUK Data Service
EDINA GeoServicesUniversity of Edinburgh
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This webinar is one in a series to launch the UK Data Service:
An introduction to data available from the UK Data Service
MONDAY 13 May 2013
Broadening access: Improving the impact of social data
TUESDAY 14 May 2013
Looking after and managing your research data
WEDNESDAY 15 May 2013
UnDISCOVERed riches: Finding and accessing data via the UK Data Service
THURSDAY 16 May 2013
An introduction to 2011 census geography
FRIDAY 17 May 2013
Welcome
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What is the UK Data Service?
• a comprehensive resource funded by the ESRC
• a single point of access to a wide range of secondary social science data
• support, training and guidance
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Who is it for?
• academic researchers and students
• government analysts
• charities and foundations
• business consultants
• independent research centres
• think tanks
ukdataservice.ac.uk
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What is Census Support?
• access to, and user support for, data from the last five UK population censuses (1971 – 2011)
• download of data through Census Support is currently restricted to UK Academic users
census.ukdataservice.ac.uk
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Poll
Have you used census data before?
• No
• Yes, for the UK
• Yes, for outside the UK
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The 2011 Census and census geography
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What is a census?
“The total process of collecting, compiling, evaluating, analysing and publishing demographic, economic and social data pertaining at a specified time, to all persons in a country or well delimited parts of the country”
United Nations (1998)
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The census in the UK
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Household census questions
• accommodation type – house or flat?
• own or rent?
• how many rooms?
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Individual census questions
• male or female?
• age?
• country of birth?
• health?
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What sort of output data is produced?
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Output census data is geographic
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Geographical visualisation / analysis
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Census Output Areas
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Making 2011 output areas
• use where possible 2001 output areas
• built from aggregations of postcodes
• have roughly similar-sized populations
• group together socially similar households
• align with local authority boundaries
• align to road centrelines and railways
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2011 Census geography hierarchy
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Different geographic scales
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Poll
Which years have you used UK census data for?
• 1971
• 1981
• 1991
• 2001
• 2011
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5 key differences in 2011 Census geography
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Difference #1: output area change
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97.4% 2.6%
How much output area change?
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What kind of output area change (in Leeds)?
Map created by Alex Singleton
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Difference # 2 : open data
You are free to:
• Copy, publish, distribute and transmit the Information
• Adapt the Information
• Exploit the Information commercially
You must, where you do any of the above:
• Acknowledge the source of the information
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Difference #3: workplaces
• Introduction of a Workplace Zones Geography in 2011
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Workplace zones vs. output areas
Contains National Statistics data © Crown Copyright and database right 2012
Contains Ordnance Survey data ©Crown Copyright and database right 2012
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Difference # 4: identifiers
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Entities + Instances = standard identifers
E00126679 E07000118
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Difference # 5: boundary versions
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Extent of the Realm boundaries
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Clipped boundaries
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Clipped = more familiar maps
EOR ClippedContains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Generalised boundaries
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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Generalised = reduced file size
Ungeneralised Generalised
125 MB450 MB
Contains National Statistics data © Crown Copyright and database right 2012Contains Ordnance Survey data © Crown Copyright and database right 2012
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2011 Census data in UK Data Service Census Support
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UK Data Service Census Support
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Poll
Which Census Support applications have you used before?
• InFuse / Casweb
• Easy Download / Boundary Data Selector
• GeoConvert
• Postcode Directory Download
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Census Support InFuse
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Census Support Boundary Data Selector
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Census Support Thematic Mapper
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More information
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Census2011Geog Project
census2011geog.census.ac.uk
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Census Support Help
ukdataservice.ac.uk/help
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Forthcoming Census Support training
http://goo.gl/RpYNA
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