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Scale Effects on Mapping: Population and Income Inequality Comparison

Explore how scale impacts the depiction of population and income inequality in China, the US, Oregon, and Nevada using small and larger-scale maps. Learn to interpret GINI index and political leanings based on map scale.

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Scale Effects on Mapping: Population and Income Inequality Comparison

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  1. The Problems of Scale

  2. On a map, a small scale is often the larger view; the large scale is the closer up, more detailed view.

  3. Small scale population map. Describe population of China.

  4. Largerscale map of China. Now describe China’s population.

  5. GINI=income inequality. Higher numbers=wider income inequality. Describe the US.

  6. Larger scale. Now describe the US’ GINI index.

  7. Describe Oregon’s and Nevada’s political leaning using this smaller scale map.

  8. Using this larger scale map, now describe Oregon’s political leaning.

  9. The scale of the map can make a huge difference in the information you glean from it!

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