This dashboard is inspired by Andy Kriebel's latest Monday Makeover and a question in the comments by Tarik:
http://vizwiz.blogspot.com/2014/07/footballrevenue.html

The main features are:
- Lollipops vertically arranged to use the same revenue axis + top N team highlights.
- Pie Charts with dynamic top N teams + the rest in a single group.
- Box Plots as visual stats summaries.
- Pareto Chart for comparing the Top N teams' share of the overall revenue, a different view from the pie charts. Given a percentage, we see how many top teams are sharing it.

There are a few touch-ups that might be worth mentioning:
- Judiciously picked colors such as Spanish red and yellow, British blue and Wimbledon green.
- Made the pie clockwise by sorting the revenue (at Andy's suggestion). "Others" is always the last slice no matter how big a slice it is.
- Added percentage along with team names to the pie label. Tableau 8 makes this easy!
- Made "Others" disappear when N reaches 19.
- Made sure all the slices have distinct colors by setting the default. Tableau curiously allocates duplicate colors in a pie and made them next to each other.
- Let "Others" label dynamically show the number of teams in it.

The insights I gained from the comparison are:
- The Premier League revenue are more evenly shared among all the teams than those in La Liga. That's probably why the former is way more exciting! It makes the teams more competitive. From the Pareto Chart, we see that the top 2 teams in La Liga almost grabbed 50% of the total revenue while in Premier League, it's the top 9 teams.
- I didn't realize that Tottenham got more revenue than Arsenal. If we have the profit data, I would like to see who is the most profitable team in absolute number and in ROI.

The dashboard is too wide to be embedded here. This is the external link: http://t.cn/RPUS3yS

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(Refresh the page if you want to view the gif image multiple times. Or go to Tableau Public and click the button at the top-right corner.)

Jake and I collaborated on a dashboard. He told me that he learnt a way to create an in-place help page in Tableau. He first saw it at a conference somewhere and couldn't recall who the speaker was. So I am blogging here about it but the credit goes to somebody else. If anyone knows who the original creator is, leave a comment below.

The key idea is to float a semi transparent worksheet on top of the dashboard, where a help text box is strategically placed on top of each chart. This way, we can explain how to view each chart and what data points are important, etc. This worksheet is collapsible by a show/hide button. 

Below I would like to show how this worksheet can be constructed.

1. Sheet with a single data mark.

  • Double click the empty space in Marks panel and add two single quotes. Make the null pill a text label. This creates a single null mark.
  • Set the view as "Entire View"

2. Create an show/hide button

  • Go to the target dashboard
  • Drag a floating vertical container to the dashboard, making it cover all the area of interest.
  • Drag the Single Null Mark sheet and drop it into the above container. Hide the sheet title.
  • Create an open/close button for the container and place the button at the top-right corner.

3. Add annotations

  • Format the sheet background opacity as 70% in the layout manager             
  • Select area annotations and place them anywhere of interest. 
  • Write help text and format it to highlight important messages.  
  • The text can serve as functional guide and/or insight guide.

Here is an example. Feel free to download the workbook and explore. Click the "i" button at the top-right corner to view the in-place help. 

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