Comments on: Tornado Charts and Dot Plots

By: Jon Peltier

Jon Peltier — Fri, 04 Mar 2011 20:52:08 +0000

Dave -

In this case you want a floating bar chart, with a transparent bar with a value equal to the lower limit of the spread, and a filled bar with a value equal to the width of the spread (upper limit minus lower limit).

By: Dave Fenton

Dave Fenton — Fri, 04 Mar 2011 05:24:30 +0000

I like the tornados but they are all with respect to zero. Say you have values of ranges (5-70, 60-90, 30-80 etc.) and you want to tornado them all on top of one another where their centerlines don’t necessary match up. This is useful in Sensitivity Analysis.

Thank you,
Dave

By: Juan C. Mendez

Juan C. Mendez — Fri, 17 Sep 2010 04:02:09 +0000

John

Good post. Other kind of chart that is also named tornado is commonly used in financial and business settings to show how a given result (usually NPV) is affected by changes in the key assumptions, variables or uncertainties.

I show how to create these charts on my blog [link no longer available]

Best wishes,

Juan C.

By: Copa

Copa — Fri, 25 Jun 2010 00:58:09 +0000

thanks for the info

Greetings from the south

By: Jon Peltier

Jon Peltier — Wed, 22 Jul 2009 04:19:39 +0000

Here are a couple links: Tornado Charts Tornado Charts and Dot Plots Keep in mind that tornado charts are not as good as you might think for comparing two sets of data. The fact that the bars extend in opposite directions makes comparisons difficult.

By: Paula

Paula — Wed, 22 Jul 2009 01:30:48 +0000

In addition, I have seen a tornado chart tutorial by you, but I cant get mine to look like sarah’s with the split axis with 2 zeros. thanx.