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Census.ac.uk Mapping data using ArcGIS Carol Blackwood, UKBORDERS
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Census.ac.uk Why map census data? Benefits of mapping census data –Reveal spatial patterns –Add richness to research –(More) Effective presentation and dissemination of results
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Census.ac.uk Why map census data? Uses of mapped census data –Health –Employment –Education –Population –Ethnicity –Historic –Used in academic research and in local/central government for policy decision making
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Census.ac.uk Census Aggregate Statistics e.g. Population by district of SW England Map displaying population of SW England District outlines DIGITAL BOUNDARY DATA
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Census.ac.uk Digital Boundary Data (DBD) Digital version of geographical boundary information e.g. districts, county, output areas, primary care trust UKBORDERS – more later…
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Census.ac.uk Mapping in ArcGIS Introduction to ArcGIS (demo) Import data downloaded from CASWEB Visualise variables Create a map to print
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Census.ac.uk Retrieving and matching additional boundary data from UKBORDERS
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Census.ac.uk UKBORDERS edina.ac.uk/ukborders/ edina.ac.uk/ukborders/ – Web based delivery of DBD and associated look-up tables – Main datasets associated with 1981, 1991 and 2001 Census geography – Entire datasets and user defined areas – Comprehensive help and support – Key associated datasets e.g. current and historical NSPD –Learning materials –Metadata
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Census.ac.uk Linking Census datasets in GIS Visualising Census data using boundaries will usually involve linking datasets Three main ways: –Attribute to digital boundary data –Point-in-polygon –Polygon-in-polygon
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Census.ac.uk Retrieving and matching additional boundary data Download Primary Care Trust areas from UKBORDERS Load into ArcMap Spatially link to Ethnicity data Visualise Ethnicity stats by PCTs
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