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Aug 07, 2023 •635 likes •820 views

Space Time Visualisation of Police Incidents Chris Brunsdon School of Environmental Sciences University of Liverpool christopher.brunsdon@liverpool.ac.uk Tuesday, 8 May 12 Disturbance Call-Outs Examining a particular type of crime and

  1. Space Time Visualisation of Police Incidents Chris Brunsdon School of Environmental Sciences University of Liverpool christopher.brunsdon@liverpool.ac.uk Tuesday, 8 May 12

  2. Disturbance Call-Outs • Examining a particular type of crime and its daily and weekly cycles. Tuesday, 8 May 12

  3. Location and time both important ... • Police location needs to match disturbance location • Different places are likely start-points for public order problems at different times of day... Tuesday, 8 May 12

  4. Tuesday, 8 May 12

  5. Tuesday, 8 May 12

  6. Tuesday, 8 May 12

  7. Tuesday, 8 May 12

  8. The Point Pattern in Space and Time Tuesday, 8 May 12

  9. Smoothed visualisation Tuesday, 8 May 12

  10. Isosurfaces – extending risk map in time Tuesday, 8 May 12

  11. Consider the contours ‘floating’ in spacetime Tuesday, 8 May 12

  12. Join them up – obtain a 2D surface in 3D space Tuesday, 8 May 12

  13. Finally – fill out the wire frame to get the surface… Tuesday, 8 May 12

  14. Tuesday, 8 May 12

  15. Isosurfaces in practice • OpenDX – IBM open source software for scientific visualization • Analyst needs to be able to interact with the isosurface – and see associated risk maps for any given time-slice (snaphot) Tuesday, 8 May 12

  16. Tuesday, 8 May 12

  17. Further Extensions... • Representing disorder using VR Further Reading .... Brunsdon, C., Corcoran, J. and Higgs, G. (2007) ‘Visualising Space and Time in Crime Patterns: A Comparison of Methods’, Computers, Environment and Urban Systems, 31, 52-75. Craglia, M., Haining, R., Wiles, P. (2000) ‘A Comparative Evaluation of Approaches to Urban Crime Pattern Analysis’, Urban Studies, Vol 37(4), 711-729 Corcoran, J., Higgs, G., Brunsdon, C. and Ware, A. (2007) ‘The use of co-maps to examine the spatial and temporal dynamics of fire incidents: A case study in South Wales, UK’, Professional Geographer, 59(4), 522-537. Corcoran, J., Higgs, G., Brunsdon, C., Ware, A. and Norman, P. (2007) ‘The use of spatial analytical techniques to explore patterns of fire incidence: A South Wales case study’, Computers, Environment and Urban Systems, 31, 623-647 Tuesday, 8 May 12

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