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Compound map with selectable doughnut chart

Current rating 2.3/5 Impact: 3Accuracy: 23 votes
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Compound map with selectable doughnut chart
Breakdown by area of under-18 profiles on national DNA database.
Visual types
Level of expertise
Source:
Guardian Interactive (News)
http://www.guardian.co.uk/politics/interactive/2009/feb/27/police-dna-database
Interactive features
User can mouseover areas to view exact figure, and gender breakdown
Benefits & pitfalls to avoid
  • Pie charts are often criticised. Comparing the size of pie segments can be difficult, and many visualisation experts suggest that bar-charts should be used instead.
  • Shaded maps can emphasise large areas much more than small ones - for example highlighting rural areas over urban, if fixed population areas such as Super Output Areas are shown. Consider providing an alternate mode in which values are represented by circles, or values are scaled by the area size (ie showing density).
Create your own
  • Chloropleth maps can be created in a range of desktop GIS applications such as MapInfo and ArcGIS.
  • Doughnuts can be created in a range of standard data applications such as Excel.
  • Pie charts can be created in a range of standard data applications such as Excel.