Anyone who reads my blog posts knows by now that I’m very enthusiastic about Shiny (the web app framework for R - if you didn’t know what Shiny is then I suggest reading my previous post about it). One of my reasons for liking Shiny so much is ... [Read more...]

A new package has hit the CRAN shelves this week. While knitr is one of the most useful R packages in existence, ezknitr is a simple extension to it that adds flexibility in several ways. One common source of frustration with knitr is that ... [Read more...]

A new package has hit the CRAN shelves this week. While knitr is one of the most useful R packages in existence, ezknitr is a simple extension to it that adds flexibility in several ways. One common source of frustration with knitr is that it assumes the directory where the ... [Read more...]

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This tutorial was originally developed for the STAT545 course at UBC, but I decided to publish it shortly afterwards so that more people can benefit from it Shiny is a package from RStudio that can be used to build interactive web pages with R. While that may sound scary because ... [Read more...]

This article is also published on RStudio’s Shiny Articles Shiny apps often need to save data, either to load it back into a different session or to simply log some information. However, common methods of storing data from R may not work well with Shiny. Functions like write.csv() ... [Read more...]

I don’t always think Shiny is missing anything, but when I do - I fill in the gap myself. That was meant to be read as The Most Interesting Man In The World, but now that I think about it - maybe he’s not the type of guy ... [Read more...]

In this post we will walk through the steps required to build a shiny app that mimicks a Google Form. It will allow users to submit responses to some input fields, save their data, and allow admins to view the submitted responses. Like many of my other posts, it may ... [Read more...]

About a month ago I made an announcement about the initial release of shinyjs. After some feedback, a few feature requests, and numerous hours of work, I’m excited to say that a new version of shinyjs v0.0.6.2 was made available on CRAN this week. The package’s main objective ... [Read more...]

For those who don’t know, every time a new blog post gets added to R-Bloggers, it gets a corresponding tweet by @Rbloggers, which gets seen by Rbloggers’ ~20k followers fairly fast. And every time my post gets published, I can’t help but check up on how many people ... [Read more...]

If you've always wanted to have an RStudio Server of your own so that you can access R from anywhere, or your own Shiny Server to host your awesome shiny apps, DigitalOcean (DO) can help you get there easily. DigitalOcean provides virtual private servers (they call each server a droplet), ... [Read more...]

shinyjs is my second R package that managed to find its way past the CRAN review process. It lets you perform common useful JavaScript operations in Shiny applications without having to know any JavaScript. Demos You can check out a demo Shiny app that lets you play around with some ... [Read more...]

The R community is generally very fond of open-source-ness and the idea of releasing all code to the public. Writing packages has become such an easy experience now that Hadley's devtools is so powerful, and as a result there are new packages being released by useRs every single day. A ... [Read more...]

My first CRAN package, ggExtra, contains several functions to enhance ggplot2, with the most important one being ggExtra::ggMarginal() - a function that finally allows easily adding marginal density plots or histograms to scatterplots. Availability You can read the full README describing the functionality in detail or browse the source ... [Read more...]

Stop knitting & start spinning - spin can help you write reports much faster and avoid repeating yourself - Anyone who loves the idea of dynamic report generation with R is probably a big fan of knitr and its flagship function - knit. But not many people seem to know about ... [Read more...]