It is no secret that playing in the NFL is a physically demanding job, and along with that comes the unfortunate side effect of injuries.
Today we will take a bit of a break from the NFL Draft and will look into creating a cool-looking Pareto Chart of the current list of NFL injuries, including some key prospects. At least I think it is cool-looking. Don't judge.
In order to map injuries, the first step is to obtain data on who is injured. This was done from RotoWorld (thanks guys!) and compiled in Excel. It looks like this.
Once data was collected, the next step to making the pareto is to map the various body parts listed in the injury report onto an image. This is where the Tableau magic happens.
The next step is to create a new tab in Excel that you can use to map the body parts. Once you get the size of the image you're using (in my case it is 289x525) into the table (this is done to force Tableau into the correct data conventions, you don't need it otherwise).
Now, we can open Tableau and load in the data set. The tables created will need to be joined, so do that now.
The next step is to load our player image in as a map. First, make sure your X and Y columns from the mapping table come in as measures.
Then, you will follow the path shown below, and fill in the screen with your corresponding picture size (again, mine is 289x525, but yours will likely differ).
Once this is all done, click OK. Then, right click and drag X to columns and Y to rows as unique values. This should load your picture onto the screen.
Now, you will need to plot your data points. For every point to be mapped (in my case, for all body parts with an injury), right click on the area and select Annotate-->Point.
Copy the corresponding X and Y values into your table. Repeat until all points are plotted, then save your data file. It should now look comparable to this.
Now we're on the home stretch! Add the item being counted in the Pareto to the Size Card, adjust coloring and shapes as you desire, and you're all set.
Hmm, our football player appears to have lost an arm. Let's fix that. Go back to the Map-->Background Images menu and click edit the background image you created earlier. On the second tab, there is a check box that forces the entire image to be shown. Select that to correct the issue.
Voila! The entire Pareto Chart is now shown. The only steps remaining are to adjust the title and Tooltip, add a filter by position, and hide the axes. Let's have a look at the finished product.
I'll be back next week with another Tableau nugget!
Author: Chris Bick