I saw this Viz on World War I in the Tableau forum and without a doubt, I nominated it for Viz of the Day by sending a message to public@tableau.com on 7/22. In the message, I didn't write anything but the link to the viz. On 7/25, it was selected as the Viz of the Day. Note that between 22 and 25, there was a weekend.

So, that's how good the viz is. I had nothing to add. The only concern I had was, the reference line will fall off the chart after 2018. The author Ryan Rowland replied that he will come up with a solution between now and 2018. I bet he will.

A few days ago, I felt that for an information viz, it would be really helpful to the viewers if we add some web extensions to it for people to further explore.

Here I will present an alternative solution to Tableau's Story Points. The main difference is that it can accommodate global filters. This feature has been asked by many users in the Tableau forum. Besides, the formatting option is much limited in Story Points. More have been asked for. For example, people want to put a logo on top of the board. Here is Johan's collection of feature requests on Story Points.

Here is an example in which we have 7 slides or story points.
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Just wrote a post on back-to-back chart tweaks last week in my #TweakThursday series. This week's #MakeoverMonday project presents a dataset in which we can apply the technique. The idea is to provide back to back comparison at a lower level of details. This is to make up the shortcoming of the back-to-back chart, where the comparison at lower level is not obvious.

So here you go

When mouse hovering over the chart, you will see the detailed comparison at the gender level in the tooltips.

Back-to-back bar chart (also called divergent bar chart) is visually appealing and intriguing, I have to admit. Its shape is dynamic, capricious and unpredictable. It may look like a tree, a pyramid, a wave depending on the data set.

However, a bit shortcoming of this chart is that, it is not obvious to compare any pair of the back-to-back bars. Overcoming this will make the back-to-back bar chart a viable solution in many cases.

Ben Jones of Tableau Software, the author of the book Communicating Data with Tableau, asked me if I can tweak his recent viz on the 50+ goals club of international soccer.

Hey @aleksoft, for #TweakThursday, I'd love to know what you'd do to improve my latest viz https://t.co/sE37pXsbmW pic.twitter.com/6CjNwMdftv

— Ben Jones (@DataRemixed) July 14, 2016 It is quite an honor and a challenge! Ben's viz is already excellent. I would try to add some bells and whistles in my own taste.
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The Viz of the Day on 7/13/2016 is the first one from an author in China that I have ever seen. Although some of the description is in Chinese, the viz is understandable by anyone who knows English.

The sensual curves of the sigmoid function and the wild cocktail colors make the viz irresistible to an ordinary man like me. The viz obviously seduced the committee of Tableau's Viz of the Day as much.

Not familiar with this kind of chart type, I played with it a bit.

[First, this is mainly a server feature. You have to publish the viz to the server to see it in action. It doesn't work well on Tableau Desktop. There exists a curious discrepancy between desktop and server renderings of visual tooltips.]

Here are a couple of facts about visual tooltips:

They are based on regular charts They are turned on/off by action filters By laying "visual tooltips" on top of "visual tooltips", or "Viz on Viz" we can create recursive drilldowns.
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In 6/28/2016's Viz of the Day, it is charting the China Tea Leaf Index created by Reuters/Thomson, an index that is tracking the Chinese Economy. The index is composed of 10 factors. The formula is a nonlinear calculation. 10 factors are used as parameters that we can exclude one or more to see how much the index changes.

When excluding some of the factors, however, we lost the view of the initial index with all the factors. So, the tweak I added is a pair of lines using dual axis.
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