Yet another population cartogram: Creating gridded cartograms using ArcGIS and ScapeToad

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Slides by Benjamin Hennig, Based on a tutorial for the MSc in Social and Spatial Inequalities at the University of Sheffield, Module GEO6016 Data, Visualisation and GIS, October 2009

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Yet another population cartogram: Creating gridded cartograms using ArcGIS and ScapeToad

  1. 1. Yet another population cartogram Creating gridded cartograms using ArcGIS and ScapeToadSlides by Benjamin HennigBased on a tutorial for the MSc in Social and Spatial Inequalities at the University of SheffieldModule GEO6016 Data, Visualisation and GISOctober 2009
  2. 2. Data• Population – Gridded Population of the World (GPWv3, http://sedac.ciesin.columbia.edu/gpw/)• Country Shapes – ESRI Sample Data or – Global Administrative Boundaries (http://gadm.org/)
  3. 3. GIS works I• Preparing the grid: Creating a 1° fishnet ArcToolbox:  Data Management Tools  Feature Class  Create Fishnet
  4. 4. GIS works I• Preparing the grid: Creating a 1° fishnet ArcToolbox:  Data Management Tools  Feature Class  Create Fishnet
  5. 5. GIS works IIIntermediate steps:• Coverting grid to polygons (ArcToolbox  Data Management Tools  Features  Feature to Polygon)• Adding basedata: – population raster (gpw_1deg.bil) – country shapes (countries2007.shp)
  6. 6. GIS works IV• Converting the population raster: ArcToolbox:  Conversion Tools  From Raster  Raster to Point
  7. 7. GIS works IV• Converting the population raster: ArcToolbox:  Conversion Tools  From Raster  Raster to Point
  8. 8. GIS works V• Assigning population values to grid: ArcToolbox:  Analysis Tools  Overlay  Spatial Join
  9. 9. GIS works V• Assigning population values to grid: ArcToolbox:  Analysis Tools  Overlay  Spatial Join
  10. 10. GIS works VI• Cutting out the continents: ArcToolbox:  Analysis Tools  Overlay  Intersect
  11. 11. GIS works VI• Cutting out the continents: ArcToolbox:  Analysis Tools  Overlay  Intersect
  12. 12. Cartogram Transformation
  13. 13. Cartogram Transformation
  14. 14. Cartogram Transformation
  15. 15. Cartogram Transformation
  16. 16. Cartogram Transformation
  17. 17. Cartogram Transformation
  18. 18. Cartogram Transformation
  19. 19. Cartogram Transformation
  20. 20. Final Visualization
  21. 21. …well done!http://www.worldpopulationatlas.org/

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