Using a slopegraph to highlight tactical voting.
By-election slopegraphs
Using slopegraphs to show voting changes between the 2010 UK general election and recent by-elections.
Communicating changes in rank over time: bumps charts and slopegraphs
Ideas concerning the tracking of carbon dioxide emission rankings through time.
Improving on a pair of pie charts
A brief discussion about perceptual problems associated with pie charts and some suggested alternatives to using a pair of pie charts to show the composition of a whole at two different points in time. Uses data from an International Energy Agency report.