Shiny-and web development with data–is fun.

I haven’t done a lot of personal work with Shiny recently. Most of what I’ve done with Shiny in the last few years has been professional, contained in Docker, and launched on either a Shiny server or pushed to a cloud provider. However, here’s a few apps I put together a long time ago.

  • Grade inflation at North American universities - An exercise in web scraping (15 Dec 2014), I pulled these data from the website GradeInflation.com with a simple R funtion (using regex) for display purposes. I doubt most people realize how prevalent–and rapid–grade inflation is throughout our university system.
  • The distribution of slopes from linear models - Much more academic (published 9 Sep 2014), I wrote this app to easily explore how the distribution of the slopes of fisheries weight-as-a-function-of-length data changes as the length range of a population changes. This is part of a manuscript I’m working on to introduce quantile regression of fisheries weight-length data as a means to compare actual fish weights to estiated fish weights of different distributions.
  • Playing craps - An app for fun (published 1 Sep 2014). I spent a cold and windy Sunday afternoon coding a craps simulation in R in winter 2013. Recently I decided that it’d be fun to rewrite that for publication to Shiny.
  • Walleye weight-length data - My first app (published 12 Aug 2014) as a ‘proof of concept’ for myself. This is a simple app, meant only as a training exercise. The plots in this app are ‘standard’ plots and regressions are “standard” plots for fisheries science. Indeed, weight-length data is some of the most important data collected in fisheries (see Ranney et al. 2010 and Ranney et al. 2011 for more information).

References

Ranney, S. H., M. R. Fincel, M. R. Wuellner, J. A. VanDeHey, and M. L. Brown. 2010. Assessing length-related bias and the need for data standardization in the development of standard weight equations. North American Journal of Fisheries Management 30:655-664.

Ranney, S. H., M. R. Fincel, M. R. Wuellner, J. A. VanDeHey, and M. L. Brown. 2011. Assessing length-related biases in standard weight equations: response to comment. North American Journal of Fisheries Management 31:661-665.