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
AUDIENCE THEORY -CULTIVATION THEORY - GERBNER.pptx
Creating gridded cartograms using ArcGIS and ScapeToad
1. Yet another population cartogram
Creating gridded cartograms
using ArcGIS and ScapeToad
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
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. GIS works I
• Preparing the grid: Creating a 1° fishnet
ArcToolbox:
Data Management Tools
Feature Class
Create Fishnet
4. GIS works I
• Preparing the grid: Creating a 1° fishnet
ArcToolbox:
Data Management Tools
Feature Class
Create Fishnet
5. GIS works II
Intermediate 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. GIS works IV
• Converting the population raster:
ArcToolbox:
Conversion Tools
From Raster
Raster to Point
7. GIS works IV
• Converting the population raster:
ArcToolbox:
Conversion Tools
From Raster
Raster to Point
8. GIS works V
• Assigning population values to grid:
ArcToolbox:
Analysis Tools
Overlay
Spatial Join
9. GIS works V
• Assigning population values to grid:
ArcToolbox:
Analysis Tools
Overlay
Spatial Join
10. GIS works VI
• Cutting out the continents:
ArcToolbox:
Analysis Tools
Overlay
Intersect
11. GIS works VI
• Cutting out the continents:
ArcToolbox:
Analysis Tools
Overlay
Intersect