Waterfall charts are sometimes quite helpful to illustrate the various moving parts in financial data, in particular where I have positive and negative values like a profit and loss statement (P&L). However, they can be a bit of a pain to produce in Excel. Not so in R, thanks to the waterfall package by James Howard. In combination with the latticeExtra package it is nearly a one-liner to produce a good looking waterfall chart that mimics the look of The Economist:
|Example of a waterfall chart in R|
library(latticeExtra) library(waterfall) data(rasiel) # Example data of the waterfall package rasiel # label value subtotal # 1 Net Sales 150 EBIT # 2 Expenses -170 EBIT # 3 Interest 18 Net Income # 4 Gains 10 Net Income # 5 Taxes -2 Net Income asTheEconomist( waterfallchart(value~label, data=rasiel, groups=subtotal, main="P&L") )Of course you can create a waterfall chart also with
ggplot2, the Learning R blog has a post on this topic.