Slides from a presentation by Benjamin Hennig at the ESRI International User Conference in San Diego, 15 July 2009. See more at http://www.viewsoftheworld.net/?p=654

1. Re-Mapping
the World’s Population
Benjamin D Hennig
Danny Dorling, John Pritchard, Mark Ramsden
Department of Geography, The University of Sheffield

2. 2
Contents
• Introduction: The Worldmapper project
• A gridded population cartogram
- Data
- Methods
- Results
• Outlook
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

3. The Worldmapper project
www.worldmapper.org

4. 4
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

5. 5
World Population Cartogram
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

6. A gridded
population cartogram
data

7. 7
Gridded Population Data
SEDAC GPWv3
- Based on national statistical office
estimates of population
- Data for 1990-2015
- Different resolutions available (1°-2.5’)
Image Source: http://sedac.ciesin.columbia.edu/gpw/global.jsp#
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

8. A gridded
population cartogram
methods

9. 9
Cartogram creation
I. Data preparation (ArcMap 9.3):
- grid-data import (raster format)
- data conversion to polygons via ArcToolbox
- metadata supplementation by adding worldmapper
metadata to each raster cell
I. Cartogram calculation
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

10. 10
Cartogram creation
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

11. 11
Cartogram creation
I. Data preparation (ArcMap 9.3):
- grid-data import (raster format)
- data conversion to polygons via ArcToolbox
- metadata supplementation by adding worldmapper
metadata to each raster cell
I. Cartogram calculation
II. Visualization
- union of country polygons
- applying worldmapper color scheme
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

12. 12
Cartogram creation
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

13. A gridded
population cartogram
results

14. 14
A new
World Population Cartogram
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

15. 15
A new
World Population Cartogram
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

16. 16
Source: http://www.worldmapper.org/images/largepng/2.png

17. 17
The US Population Cartogram
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

18. Re-Drawing the world
Outlook

19. 19
Country Cartograms
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

20. 20
Cartogram Globe
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

21. 21
Perspectives
- Going down to earth:
Regional Cartograms
- Going to the users:
Digital Globes & Mapping platforms
- Extending topics:
Using the population grid to map
other worldmapper topics upon it
15/07/2009 29th ESRI UC 2009 - Hennig et al (University of Sheffield): Re-Mapping the World’s Population

22. Visit us at
www.worldmapper.org
Contact me at
b.hennig@worldmapper.org
www.viewsoftheworld.net
Thanks
for your
attention.