UpAndDownPlots: An R Package for Displaying Absolute and Percentage Changes

UpAndDown plots display the ups and downs of sector changes that make up an overall change between two time points. They show percentage changes by height and absolute changes by area. Most alternative displays only show percentage changes. UpAndDown plots can visualise changes in indices, in consumer markets, in stock markets, in elections, showing how the changes for sectors or for individual components contribute to the overall change. Examples in this paper include the UK's Consumer Price Index, Northern Ireland population estimates, and the German car market.