RStudio analyzes how the California Department of Public Health built a COVID-19 dashboard in R and Shiny that now serves millions of California citizens. Read more →

We offer 3 entertaining Shiny apps plus a bonus app from our 2nd Annual Shiny Contest that will help you forget work over Labor Day weekend Read more →

Yes, Shiny apps can be fast and scalable. But only if you build them in the right way and use the proper tools. Read more →

After evaluating 220 submissions from 183 unique Shiny developers this year, RStudio is proud to finally announce the winners of the 2020 Shiny Contest. Read more →

learnr 0.10.0 has been released! In this version of learnr, quiz questions have been expanded to allow for more question types. Text box quiz questions have been implemented natively within learnr and ranking questions have been implemented using the sortable package. The learnr R package makes it easy to turn any R Markdown document into an interactive tutorial. Tutorials consist of content along with interactive components for checking and reinforcing understanding. Read more →

Shiny 1.4.0 has been released! This release mostly focuses on under-the-hood fixes, but there are a few user-facing changes as well. If you’ve written a Shiny app before, you’ve probably encountered errors like this: div("Hello", "world!", ) #> Error in tag("div", list(...)) : argument is missing, with no default This is due to a trailing comma in div(). It’s very easy to accidentally add trailing commas when you’re writing and debugging a Shiny application. Read more →

Shiny is one of the best ways to build interactive documents, dashboards, and data science applications. But advancing your skills with Shiny does not come without challenges. Shiny developers often have a stronger background in applied statistics than in areas useful for optimizing an application, like programming, web development, and user-interface design. Though there are many packages and tools that make developing advanced Shiny apps easier, new developers may not know these tools exist or how to find them. Read more →

We’re excited to announce the release of Shiny v1.3.2. This release has two main features: a new reactivity debugging tool we call reactlog, and much faster serving of static file assets. Introducing reactlog: Visually debug your reactivity issues Debugging faulty reactive logic can be challenging, as we’ve written and talked about in the past. In particular, some of the most difficult Shiny app bugs to track down are when reactive expressions and observers re-execute either too often (i. Read more →

We’re pleased to announce the CRAN release of Shiny v1.2.0! This release features Plot Caching, an important new tool for improving performance and scalability in Shiny apps. If you’re not familiar with the term “caching”, it just means that when we perform a time-consuming operation, we save (cache) the results so that the next time that operation is requested, we can skip the actual operation and instantly fetch the previously cached results. Read more →

Shiny Server 1.5.8.921 and Shiny Server Pro 1.5.8.985 are now available. This release includes support for listening on IPv6 addresses. It also fixes issues with servers that have home directories mounted over NFS with root_squash, and with networks that use double-bind LDAP with restrictive permissions on user accounts. Finally, this release changes the default SSL/TLS configuration in Shiny Server Pro to remove support for the obsolete and insecure TLSv1 protocol. Read more →