SatRday in South Africa

What is SatRday? SatRday in Cape Town Be in it to win it Jumping Rivers is proud to be sponsoring the upcoming SatRday conference in Cape Town, South Africa on 17th March 2018. What is SatRday? SatRdays are a collection of free/cheap accessible R conferences organised by members of the R community at various locations across the globe. Each SatRday looks to provide talks and/or workshops by R programmers covering the language and it’s applications and is run as a not-for-profit event.

The Trouble with Tibbles

What are tibbles? Precursors Tribblemaking Tibbles vs Data Frames Disadvantages To summarise.. Let’s get something straight, there isn’t really any trouble with tibbles. I’m hoping you’ve noticed this is a play on 1967 Star Trek episode, “The Trouble with Tribbles”. I’ve recently got myself a job as a Data Scientist, here, at Jumping Rivers. Having never come across tibbles until this point, I now find myself using them in nearly every R script I compose.

Conference Cost

In last weeks post we tantalised you with upcoming R & data science conferences, but from a cost point view, not all R conferences are the same. Using the R conference site, it’s fairly easy to compare the cost of previous R conferences. I selected the main conferences over the last few years and obtained the cost for the full ticket (including any tutorial days, but ignoring any discounts). Next, I converted all prices to dollars and calculated the cost per day.

Upcoming R conferences (2018)

It’s that time of year when we need to start thinking about what R Conferences we would like to (and can!) attend. To help plan your (ahem) work trips, we thought it would be useful to list the upcoming main attractions. We maintain a list of upcoming rstats conferences. To keep up to date, just follow our twitter bot. rstudio::conf (San Diego, USA) rstudio::conf is about all things R and RStudio

Hosting RStudio Server on Azure

Can’t be bothered reading, tell me now Getting started Setting up R Opening ports ready for RStudio Installing RStudio Nicer URLs Adding SSL Can’t be bothered reading, tell me now Host RStudio server on an azure instance. Configure the instance to access RStudio with a nice url Getting started Azure is cloud computing framework provided by Microsoft, the same idea as AWS by Amazon. In this post, we’ll describe how to use Azure to run RStudio Server in the cloud.

Competition: StanCon 2018 ticket

The prize How do I enter? FAQ Today we are happy to announce our Stan contest. Something we feel very strongly at Jumping Rivers is giving back to the community. We have benefited immensely from hard work by numerous people, so when possible, we try to give something back. This year we’re sponsoring StanCon 2018. If you don’t know, Stan is freedom-respecting, open-source software for facilitating statistical inference at the frontiers of applied statistics.

Comparing plotly & ggplotly plot generation times

Prerequisites Analysis Summary The plotly package. A godsend for interactive documents, dashboard and presentations. For such documents there is no doubt that anyone would prefer a plot created in plotly rather than ggplot2. Why? Using plotly gives you neat and crucially interactive options at the top, where as ggplot2 objects are static. In an app we have been developing here at Jumping Rivers, we found ourselves asking the question would it be quicker to use plot_ly() or wrapping a ggplot2 object in ggplotly()?

Official StanCon Sponsor

Stan is freedom-respecting, open-source software for facilitating statistical inference at the frontiers of applied statistics. Or to put it another way, it makes Bayesian inference fast and (a bit) easier. StanCon is the premier conference for all things Stan related and this year it will take place at the Asilomar Conference Grounds, a National Historic Landmark on the Monterey Peninsula right on the beach. RStan and other interfaces One of the great features about Stan is that you can use Stan via R (or Python or …).

Timing in R

Nested timings 1) Sys.time() 2) The tictoc package Comparing functions 1) system.time() 2) The microbenchmark package Conclusion As time goes on, your R scripts are probably getting longer and more complicated, right? Timing parts of your script could save you precious time when re-running code over and over again. Today I’m going to go through the 4 main functions for doing so. Nested timings 1) Sys.

Speeding up package installation

Can’t be bothered reading, tell me now The wonder of CRAN Parallel package installation: Ncpus Does it work? A permanent change: .Rprofile References Can’t be bothered reading, tell me now A simple one line tweak can significantly speed up package installation and updates. The wonder of CRAN One of the best features of R is CRAN. When a package is submitted to CRAN, not only is it checked under three versions of R