That's exactly what I tried to do in my previous post: http://dougmccune.com/blog/2011/04/26/visualizing-time-with-the-double-time-bar-chart/ http://dougmccune.

That's exactly what I tried to do in my previous post: http://dougmccune.com/blog/2011/04/26/visualizing-time-with-the-double-time-bar-chart/ http://dougmccune.com/blog/2011/04/26/visualizing-time-with-... The big downsides I was trying to overcome with line/bar charts is the difficulty in preserving the continuity from the end of the chart back to the beginning. A normal bar chart usually just breaks the data, making it hard to understand the trend that occurs in the time period that spans the break. But you're definitely right that that type of visualization makes comparing the bars much much easier.