Dataviz logo
Oxford Consultants for Social Inclusion logo

Gallery: Bubble chart + Choropleth map

1 example
Showing visual types:Bubble chart Icon for removing this tag Icon for this tag's benefits and pitfalls Icon for how to create this kind of visualisationChoropleth map Icon for removing this tag Icon for this tag's benefits and pitfalls Icon for how to create this kind of visualisation

Benefits & pitfalls

Benefits & pitfalls: bubble chart

  • Using area or volume to represent data can distort data values, and exaggerate differences between values. For example, if the radius of the circle is used to represent data values, the area of the circle will quadruple if the data values double. There is also an issue of 'perceptual scaling' - the tendency of people to underestimate areas.

Benefits & pitfalls: choropleth map

  • 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).

How to create your own

Create your own: bubble chart

  • Bubble charts can be created in a range of standard data applications such as Excel.

Create your own: choropleth map

  • Chloropleth maps can be created in a range of desktop GIS applications such as MapInfo and ArcGIS.

Map (multi layer): Ageing population

Screenshot for 'Map (multi layer): Ageing population'
Map showing population trends and change in the old age population. To compare both impacts of population growth and aging population.
Unrated