Open map List

Donut Chart

In cartography, a donut chart is a circular statistical diagram with a hollow center that is used as a proportional symbol to represent data on a map. It is often used in thematic and statistical mapping to show part-to-whole relationships for specific geographic locations while allowing space for additional information in the center.

Basic

Introduction

Key Characteristics of a Donut Chart in Cartography:

  • Placed at specific geographic locations to represent data values tied to a region.
  • Shows proportions of different categories within a dataset.
  • The hollow center can display additional labels, totals, or key indicators.
  • Used in proportional symbol mapping to compare locations with different data distributions.
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Explanation

Common Uses of Donut Charts in Cartography:

  1. Demographic Mapping:
    • Showing population breakdown by race, gender, or age within cities.
  2. Economic & Industry Distribution:
    • Illustrating the percentage of different industries contributing to a region’s economy.
  3. Election Maps:
    • Visualizing vote shares by political parties in different districts.
  4. Land Use & Environmental Analysis:
    • Representing proportions of forest cover, agricultural land, and urban areas in a region.

Examples

Example of a Donut Chart in Cartography:

A map of the United States could use donut charts over major cities to represent the percentage distribution of different energy sources (coal, wind, solar, hydro) used in each state.

Outgoing relations