Repost: 11 ways to visualize data over time

FlowingData offers this terse guide on when and how to use various kinds of charts, such as lines, stacked bars, bubbles and color scales. It follows up each explanation with a link to a successful use of the chart form.

http://flowingdata.com/2010/01/07/11-ways-to-visualize-changes-over-time-a-guide/