Way back when I was first learning R, I ran across an old listserv post that talked about how the colon (:) operator was the fastest way to generate a sequence. I never really thought about it, but I got in the habit of always using it whenever I needed a sequence.
As a Valentine’s Day (gag) gift to one of my friends, I created a Shiny app1 that will calculate the number of people in the United States who meet specified sex, age, marital status, race/ethnicity, educational attainment, employment status, and annual income requirements.
While taking a disease dynamics course, I thought it would be a good opportunity to learn how to use the Shiny package in R and create an interactive interface for some of my problem sets. After a few trial runs with smaller, simpler setups, I have wrapped up the side project (for now). You can see it in action here1 and you can view the final code on my Git.