Designed by Stephen Few, a bullet chart “provides a rich display of data in a small space.” A variation on a bar chart, bullet charts compare a given quantitative measure (such as profit or revenue) against qualitative ranges (e.g., poor, satisfactory, good) and related markers (e.g., the same measure a year ago). Layout inspired by Stephen Few. Implementation by Mike Bostock based on work by Clint Ivy, Jamie Love of N-Squared Software and Jason Davies. The “update” button randomizes the values slightly to demonstrate transitions.