April Omaha R User Group Meeting

• No Limits! Using custom themes to create beautiful visualizations with ggplot2
  Mike Moore
  Don’t settle for the same old gray backgrounds and white grid lines. This talk will show how to use custom ggplot2 themes to go beyond the default look and feel, create your own themes and discover how you can find and use some of the best custom themes available today.

• Building Your First Shiny Database Application
  Matt Sharkey
  The DBI and dplyr packages have made Shiny database integration easier. R users can now build database web-apps without having to switch IDEs or write complex SQL. The efficiency gains are nice, but knowledge of these tools alone is not enough. Shiny developers can improve app performance with a little database fundamentals.

For this presentation , I will discuss what R users need to know about database design, how to handle untrusted data, and dplyr anti-patterns.

• Scalable Shiny at RStudio
  Tim Mastny
  Recent advances make Shiny more scalable than ever, and new testing suites can ensure the stability and usability of applications. In this talk, I’ll share what I learned while interning on the Shiny team at RStudio. We’ll look at new features like promises and caching that can improve server performance, as well as Shiny app testing through shinytest and shinyloadtest.

• Using Shiny to Develop an Interactive Benchmarking Tool
  UNL Bureau of Business Research
  Students from the UNL Bureau of Business Research have used Shiny to develop an interactive benchmarking tool for regions in Nebraska. Ultimately, the tool will provide comparisons between Nebraska regions and areas in other states along several dimensions. Students from the UNL BBR will present the Shiny application which contains the data used to identify the comparison regions.