Definition

Useful way of comparing Rank over time when comparing Dimension members, using a dual-axis line / circle chart.

Videos

A quick Tech Analytics video gives a reasonable overview of this chart type:

An On Demand session on Tableau.com is also available:

http://www.tableau.com/learn/tutorials/on-demand/bump-charts-0

Blog posts

Andy Cotgreave gives good advice on where the use of this chart type works – and where it doesn’t:

http://gravyanecdote.com/uncategorized/the-right-way-to-implement-a-bump-chart/

Matt Chambers‘ excellent post guides you through the process of creating bump charts in Tableau:

http://sirvizalot.blogspot.co.uk/2016/03/color-popularity-for-new-cars-2000-2015.html

Example workbooks

Matt’s blog post linked above is perfect, and the same can be said of the associated Viz:

https://public.tableau.com/profile/matt.chambers#!/vizhome/CarColorEvolutionNorthAmerica/ColorRankOverTime

Michael Mixon did a good job of showing the effectiveness of this chart type when using small dimensions:

https://public.tableau.com/profile/mtmixon3894#!/vizhome/FacebookEnergyUsage/FacebooksEnergyUsage

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