Sparklines are "intense, simple, wordlike graphics" so named by Edward Tufte. In lieu of a more detailed introduction, Professor Tufte's site has an early release of a chapter on sparklines.
Hereâs an example:
âYankees fan or Red Sox fan, Republican or Democrat, the growing deficit is a grave concern in the coming years. A strong economy helped push down the deficit during the Clinton presidency. After President Bush's first term and a costly war on terror, the picture is not so rosy. OMB data shows the ebb and flow of the deficit from 1983 - 2003.â