Your death depends on where you live. This is not surprising. We learnt it in things like "Gun, Germs and Steel" the book. Now we have serious data to prove it.
Recently, a viz of the day showed the causes of death in USA. Andy Kriebel published a makeover of the viz. As a follower of Andy's blog, I noticed there is a pattern in the distribution of the death rates from Andy's viz. It inspired me to further look into the data from a geo perspective. From the study, I got a better understanding of the distribution of the major causes of death in the US.
This Tableau story is here to present the analysis process as well as the visual tools for further exploration and analysis. The findings are presented in the summary. It may lead to more questions like why there is huge difference in annual death rate between some states. We allow you to visualize those differences.
The main points are:
- Leading causes distribution on a map
- Leading causes distribution by longitude on scatter plot
- Leading causes distribution by altitude on scatter plot
- State rank by death rate- Cause rank by death rate
- State rank by cause- Cause rank by state
- In-state percentage per cause comparison
- Top 2 causes' contribution
- Summary
The original data is from CDC 2011. The rate is per 100,000 population.
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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.)
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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