Census.ac.uk Mapping data using ArcGIS Carol Blackwood, UKBORDERS

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

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

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

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…

Census.ac.uk Mapping in ArcGIS Introduction to ArcGIS (demo) Import data downloaded from CASWEB Visualise variables Create a map to print

Census.ac.uk Retrieving and matching additional boundary data from UKBORDERS

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

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

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