Dr. Micaela Baker is an epidemiologist who studies childhood diseases. She gave us excel spreadsheets on four childhood diseases with the instructions to make a web application that would allow users to interact with the data.
We used a map of the United States where each disease dataset is displayed in individual states as a circle. The amount of cases in each state is represented as the radius of the individual circles. The larger the circle the more reported cases in the state for the specified time period.
The main feature is an interactive slider that enables users to conveniently scroll through the years of data for each childhood disease. Other features include: a button which allows the user to run an animation of the disease timeline, dropdown modals with information and links regarding each disease and a comparison function displaying the difference in the instances of the diseases pre and post vaccines, and finally, a hover effect on each circle magnitude which reveals the data, instances, and location of the diseases.
There were several challenges completing this project, including: scrubbing the data into a format acceptable to D3, injecting GPS coordinates and removing data we did not need. We solved these problems by creating a small app which ran behind the main app that completed all the data scrubbing, making the main app much faster.