Boost Your Career with Jumping Rivers Training
Published: November 27, 2025
Start 2026 strong with Jumping Rivers’ hands-on online training courses, designed to boost your skills, confidence, and career prospects in just a few focused hours.
Tag: Rbloggers
Should I Use Figma Design for Dashboard Prototyping?
Published: November 20, 2025
A brief introduction to Figma Design and some its most useful features, aimed at creators of data dashboards.
AI in Production 2026
Published: November 19, 2025
Registration is open for the first AI in Production conference, taking place in Newcastle Upon Tyne on 4 and 5 June 2026.
Jumping Rivers Webinar 4th Release
Published: November 17, 2025
Stay ahead of the curve with Jumping Rivers’ next free monthly webinar, 'Machine Learning with Python', where you’ll level up your data skills in just 55 minutes and unlock exclusive learning perks.
Get Involved in the Data Science Community at our Free Meetups
Published: November 13, 2025
Did you know that we organise free, in-person data science meetups? In this post we will talk through the typical format and topics at our meetups, along with some details for how you can get involved!
Highlights from Shiny In Production (2025)
Published: November 3, 2025
This October, Jumping Rivers hosted the fourth installment of our conference "Shiny In Production". Here we summarise the talks and workshops that were presented.
Elevate Your Skills with JR Training
Published: October 28, 2025
Boost your data expertise with hands-on, expert-led training from Jumping Rivers. Our experienced data scientists deliver practical courses in R, Python, Git, AI, and more, designed to help you apply new skills immediately. With flexible online and in-person options, comprehensive materials, and tailored in-house programmes, Jumping Rivers empowers individuals and teams to thrive in today’s data-driven world.
What's new for Python in 2025?
Published: October 16, 2025
Python 3.14 was released in October. Here we summarise some of the more interesting changes and some trends in Python development and data-science over the past year.
Jumping Rivers Webinar 3rd Release
Published: October 13, 2025
Join our free Jumping Rivers webinar, “Understanding Posit: Ecosystem and Use Cases,” to discover how Posit tools like Connect, Workbench, and Package Manager can power scalable, collaborative data workflows.
Jumping Rivers Webinar 2nd Release
Published: September 15, 2025
Our free monthly webinar series is back, and the first session on 21 August – “Reports that Write Themselves: Automated Reporting with Quarto” was a fantastic success! It was wonderful to see the Jumping Rivers community grow, with so many data professionals joining, engaging, and sharing ideas.
Inside Jumping Rivers
Published: September 9, 2025
At Jumping Rivers, we streamline data workflows with engineering, automation, and analytics. We handle the tasks you can’t, optimise the ones you didn’t know could be improved, and work alongside your team to make operations easier, smarter, and faster.
How We Do Training at Jumping Rivers: Seamless, Expert-Led, and Tailored to You
Published: August 12, 2025
When it comes to data science training, one size doesn’t fit all. At Jumping Rivers, we’ve built our reputation around delivering customised, expert-led training that actually fits your team’s goals, tools, and workflows - whether you're in healthcare, government, finance, or beyond.
Shiny in Production 2025: Sponsors
Published: August 5, 2025
Shiny in Production Conference is fast approaching and we wouldn't be able to put it on without the support of our sponsors!
Animated Maps with {ggplot2} and {gganimate}
Published: July 31, 2025
In this blog we will create an animated map of the gapminder life expectancy data using {ggplot2} and {gganimate}. In the process we will cover some of the common pitfalls when working with spatial data and how to get round them!
SIP 2025: R Dev Day
Published: July 24, 2025
Do you use R? Would you like to play a part in sustaining it? Find out about the R Dev Day that is returning as a satellite event to Shiny in Production 2025.
litmus: Maintainer Criteria
Published: July 15, 2025
How often do bugs get fixed? Does the package use source control? Is the package a solo or a group effort? These questions aid our understanding about the long-term viability of a package, and how "risky" it is.
R Package Quality: Code Quality
Published: July 10, 2025
Code quality is what typically comes to mind when talking about "good packages". Does that package pass standard checks? What is the Unit test coverage? How many dependencies does the package have? This post discusses how we use code quality when determining the package litmus score.
Jumping Rivers Webinar Launch
Published: July 8, 2025
Are you ready to expand your knowledge in R, Python, Shiny, and Posit while becoming a more valuable asset to your team? Jumping Rivers is here to help you do just that with our free monthly webinar series designed for data professionals at all levels.
R Package Quality: Documentation
Published: July 3, 2025
Not all R packages are clearly “good” or “risky”, most fall somewhere in between. This post introduces our scoring framework around package documentation. We investigate the different measures, then look at a few well known packages.
Validating Shiny Apps in Regulated Environments
Published: June 30, 2025
In regulated industries, Shiny apps must be reliable, reproducible, and well-documented. Validation builds trust, supports compliance, and prevents costly delays. Learn how to avoid common pitfalls and set up a lightweight, effective validation approach that scales with your needs. Validation isn’t a blocker, it’s a long-term advantage for you and your team.
R Package Quality: Package Popularity
Published: June 26, 2025
The popularity of an R package can be measured using package downloads and reverse dependencies. While these measures clearly have issues, they do provide a good indication of the package health. This post looks at these measures in more detail.
Shiny in Production 2025: Lightning Talk Lineup
Published: June 24, 2025
We are pleased to announce the lightning talks for this year's Shiny in Production conference! In this blog post, we've pulled together all of the talk abstracts to give you a full view of what to expect!
R Package Quality: Validation and beyond!
Published: June 19, 2025
Not all R packages are clearly “good” or “risky”, most fall somewhere in between. This post introduces a scoring framework to help users assess package quality, based on documentation, code, maintenance, and popularity. We also share key principles to ensure the scores are useful, fair, and adaptable to different contexts.
Shiny in Production 2025: Full Length Talks
Published: June 17, 2025
We are pleased to announce the full length talks for this year's Shiny in Production conference! In this blog post, we've pulled together all of the talk abstracts to give you a full view of what to expect!
Why JR’s Training is Different
Published: June 9, 2025
At Jumping Rivers, we believe training should be more than just a tick-box exercise. It should be transformative. Whether you’re learning R, Python, SQL, Git or Posit for the first time or diving into advanced topics like machine learning and Quarto, our courses are built to help you actually use what you learn — not just watch someone code.
Rethinking Image Formats
Published: June 5, 2025
Adding images to a web page used to be easy. Now with high-resolution screens and an array of modern image formats it can feel like much more work. This post explains why things have become more complex and suggestions solutions for making life a little easier and web pages more performant.
Custom PowerPoints Using {officer}
Published: May 22, 2025
From a purely design aspect, Quarto's standard output for PowerPoint falls short. You're limited to seven layout options, with the most complicated being "Two Content". The {officer} R package provides a great alternative, for those seeking total control and customisation.
Shiny in Production 2025: Workshops
Published: May 20, 2025
The details of all of our workshops for Shiny in Production are now live on the conference website. Read on for full details all in one place.
The Jumping Rivers Dashboard Gallery
Published: April 15, 2025
At Jumping Rivers we love data dashboards and are delighted to announce the release of a gallery to showcase our application-development skills.
What's new in R 4.5.0
Published: April 10, 2025
Here we summarise some of the more interesting changes that have been introduced in R 4.5.0.
Shiny in Production 2024 Videos
Published: April 8, 2025
All our videos from Shiny in Production 2024, collected together in one place.
Introducing Litmus Dashboard
Published: April 7, 2025
The Litmusverse is a suite of R tools that automates the risk assessment, scoring, and reporting of R packages—supporting compliance in regulated environments. Built for use across CRAN, Bioconductor, and internal repos, it helps teams streamline package approval and maintain a production-ready R ecosystem.
Should I Use Your R Package?
Published: March 31, 2025
Wondering if your R package collection is any good? It all boils down to your risk appetite. Happy to wing it? Go for it! Need rock-solid reliability? You'll want proper validation.
Sparklines in Reactable Tables in Shiny Apps
Published: March 27, 2025
In this blog I will demonstrate how to use sparkline reactable tables in a Shiny app. Thankfully {reactable} has some helpful functions that make this super easy!
Sparklines in Reactable Tables
Published: March 13, 2025
Following on from the first blog in the series where we looked at getting started with the sparkline package, we are now looking at how to use them in {reactable} HTML tables.
Shiny in Production 2025: Abstracts Deadline Extension
Published: March 11, 2025
Due to popular demand we are extending the abstract deadline for Shiny in Production 2025, to be held on 8th-9th October 2025 in Newcastle upon Tyne, UK. Read on for more details on how to submit your work.
Shiny in Production 2025: Call for Abstracts
Published: February 17, 2025
We are excited to announce the Call for Abstracts for Shiny in Production 2025, to be held on 8th-9th October 2025 in Newcastle upon Tyne, UK. Read on for more details on how to submit your work.
Sparkline Package
Published: February 13, 2025
This is part one of a multiple part blog series, in which I will be demonstrating how to create inline visualisations using the {sparkline} R package.
Porting a Shiny App to Observable Framework: Part 2
Published: January 30, 2025
This post, Part 2 in a series of two, looks at styling and deploying the Observable Framework app we built in part 1.
Shiny in Production 2025
Published: January 23, 2025
The fourth instalment of Shiny in Production is back this October, hosted at the Catalyst in Newcastle upon Tyne, with super early bird tickets deadline for Shiny in Production ends on the 31st of January.
Porting a Shiny App to Observable Framework: Part 1
Published: January 16, 2025
This post, Part 1 in a series of two, looks at porting the functional code of a Shiny app - written in R - into JavaScript code to be used in an Observable Framework application.
Creating an animated Christmas tree in R
Published: December 24, 2024
In this short Christmassy blog we will show you how to use {ggplot2}, {sf} and {gganimate} to create a festive animation of a sparkling Christmas tree.
Music in R
Published: December 19, 2024
Here, we’ll talk about music in R, what packages are available, how to represent musical notation, and what people are actually doing with music data in R.
Diffify & Posit Package Manager
Published: December 12, 2024
The latest version of Posit Package Manager allows us to add metadata to package pages. This means we can now directly link R and Python packages to diffify.com!
Positron vs RStudio - is it time to switch?
Published: December 5, 2024
Positron is the new beta Data Science IDE from Posit. Though Posit have stressed that maintenance and development of RStudio will continue, I want to use this blog to explore if Positron is worth the switch.
R Dev Day @ SIP 2024
Published: November 14, 2024
This year Shiny in Production hosted an "R Dev Day" split over the two days before the pre-conference workshops. R Dev Days are a new initiative of the R Contribution Working Group, providing an opportunity for R developers to get involved in contributing to the R Project. R Dev Day will be back at SIP 2025, so read on to find out what participants got up to and consider coming along next year!
Training Lineup for 2025: January-June
Published: November 7, 2024
All of our public training courses for the first half of 2025 are now available to book! Head over to our public training webpage to book in and start building your programming skills in the new year! In this blog, we list all of our upcoming courses with a description, bookable dates, course level and a link to find out more.
Vetiver: Monitoring Models in Production
Published: October 31, 2024
Part 3 in our series of blogs on vetiver for MLOps. Having previously introduced the modelling and deployment steps of the MLOps workflow, we now consider the maintenance of a model in production. The monitoring process involves adding a date column to our data, scoring our model at regular time intervals, and checking for signs of model drift over time as the data evolves.
Highlights from Shiny in Production (2024)
Published: October 17, 2024
The 9th and 10th of October saw the third Shiny in Production conference hosted by Jumping Rivers. Here we share the highlights from our fabulous talks and workshops.
Shiny in Production 2024: Full speaker lineup
Published: August 8, 2024
We are pleased to announce the full line-up for this year's Shiny in Production conference! In this blog post, we've pulled together all of the talk abstracts to give you a full view of what to expect!
Shiny in Production 2024: Workshops
Published: July 4, 2024
The details of all of our workshops for Shiny in Production are now live on the conference website. Read on for full details all in one place.
A timeline of R's first 30 years
Published: June 27, 2024
R has come a long way since it's initial public release in August 1993. Explore some highlights of the last thirty years in an interactive timeline.
Vetiver: Model Deployment
Published: June 20, 2024
Part 2 of our series of blogs on vetiver for MLOps. In this post, we demonstrate how to deploy a machine learning model to production using Docker, Posit Connect, and SageMaker. Docker allows developers to bundle application code with necessary dependencies, simplifying deployment. We outline the process of creating a Dockerfile with the {vetiver} package and running the model locally. Additionally, we show how to publish the model to Posit Connect and SageMaker for broader accessibility.
Vetiver: First steps in MLOps
Published: June 13, 2024
Part 1 of our series of blogs on vetiver for MLOps. This post introduces MLOps and its integration into the traditional data science workflow, focusing on continuous model deployment and maintenance. It demonstrates automating data importation, creating a model with {tidymodels}, and using {vetiver} to store and deploy the model. The process includes creating an API with {plumber} and deploying it locally. Finally, it verifies the API functionality, setting the stage for future production deployments. description: Part 1 of our series of blogs on vetiver for MLOps. This post introduces MLOps and its integration into the traditional data science workflow, focusing on continuous model deployment and maintenance. It demonstrates automating data importation, creating a model with {tidymodels}, and using {vetiver} to store and deploy the model. The process includes creating an API with {plumber} and deploying it locally. Finally, it verifies the API functionality, setting the stage for future production deployments.
June 2024 Training Update
Published: June 6, 2024
Our courses for the second half of 2024 have now been released. We have everything from the very basics of R and Python for data science, to advanced statistical modelling and machine learning. Interested in dashboards and reporting? We have courses on reporting with Quarto, as well as both introductory and advanced Shiny.
Shiny in Production 2024: Call for Abstracts
Published: May 30, 2024
We are excited to announce the Call for Abstracts for Shiny in Production 2024, to be held on 9th-10th October 2024 in Newcastle upon Tyne, UK. Read on for more details on how to submit your work.
SatRdays London 2024: Thanks for coming!
Published: May 9, 2024
We wanted to say a huge thank you to everybody who attended SatRdays London 2024! It was brilliant to see you all there, and we hope you enjoyed the day as much as we did.
What's new in R 4.4.0
Published: April 25, 2024
R 4.4.0 introduces some cool features (one of which is experimental) and makes one of our favourite {rlang} operators available in base R.
SatRdays London 2024: Registration Closing Soon
Published: April 12, 2024
Registration for SatRdays London 2024 is closing soon! Don't miss out on this excellent opportunity to expand your R knowledge and network with other R enthusiasts. Read on for a reminder of what to expect.
Reading large spatial data
Published: April 4, 2024
Reading in large spatial data can sometimes be a pain. Here are some simple things to consider when working in spatial data in R and tips for breaking large data sets into more manageable chunks.
SatRdays London 2024: Sponsors
Published: March 19, 2024
SatRdays London is fast approaching and we wouldn't be able to put it on without the support of our sponsors!
Spring clean your R packages
Published: March 7, 2024
Give your R packages a spring clean with these helper functions from the usethis package.
An introvert's guide to networking at a conference
Published: February 29, 2024
Conferences present a great opportunity to meet other professionals working in your field and lay the foundations for future collaborations. But what should you do if the idea of meeting new people puts you well out of your comfort zone?
SatRdays London 2024: Speakers
Published: February 27, 2024
SatRdays London is fast approaching and we are happy to announce our full lineup of speakers for the event! Read on for more info. If you want to join the fun, head over to the conference website to sign up!
A Blog Post About the Blog
Published: February 15, 2024
A very quick introduction to the new-look blog and tags pages and the brand new author pages.
Parquet vs the RDS Format
Published: February 1, 2024
A benefit of using the {arrow} package with parquet files is it enables you to work with ridiculously large data sets from the comfort of an R session. In this post we explore the timescales associated with different methods of data storage.
Events at Jumping Rivers 2024
Published: January 25, 2024
We're a couple of weeks into 2024, and now that we've all settled back in, we thought it was a good time to let you know what events we have coming up for you this year!
Reading and Writing Data with {arrow}
Published: January 18, 2024
Apache Arrow is a cross-language format for super fast in-memory data. It's designed for efficient analytic operations. In this post, we look at reading and writing data using Arrow and the advantages of the parquet file format.
Security Headers for Shiny Applications
Published: January 11, 2024
Shiny applications are easy to set up. However, as they often contain sensitive information, care should be taken. This post discusses standard server headers that can be set to harden your application.
Effect of Shiny Widgets with Google Lighthouse
Published: December 14, 2023
Inspired by Colin Fay's Shiny in Production 2022 talk, "Destroy All Widgets", this blog post series explores how to use Google Lighthouse to measure the performance of your Shiny apps. The last blog in the Lighthouse series uses Google Lighthouse to see the differences each component has on the app times.
Analysing Shiny App start-up Times with Google Lighthouse
Published: December 7, 2023
Inspired by Colin Fay's Shiny in Production 2022 talk, "Destroy All Widgets", this blog post series explores how to use Google Lighthouse to measure the performance of your Shiny apps. In this second post of the series, we show how to use lighthouse to analyse your app's start-up times.
Using Google Lighthouse for Web Pages
Published: November 30, 2023
Inspired by Colin Fay's Shiny in Production 2022 talk, "Destroy All Widgets", this blog post series explores how to use Google Lighthouse to measure the performance of your Shiny apps. In this first post of the series, we show how to run and read Google Lighthouse reports.
Training Lineup for 2024: January-June
Published: November 28, 2023
All of our public training courses for the first half of 2024 are now available to book! Head over to the public courses page on our website to book in and start building your programming skills in the new year! In this blog post, we provide a list of all of our upcoming courses with a description, upcoming dates, course level and a link to the page to find out more!
Getting started with theme()
Published: November 23, 2023
The `theme()` command from {ggplot2} has a lot of arguments. This can be a bit daunting, even for those who are familiar with {ggplot2}! We will walk you through how to modify some aspects of a {ggplot2} theme and give you the confidence to try making your own theme modifications.
SatRdays London 2024
Published: November 14, 2023
SatRdays is returning to London in April 2024! We're excited to welcome you to Bush House again next year. Want to get even more involved? Read on to find out how you can submit an abstract for a talk!
Sluggish system or client code?
Published: November 2, 2023
Over several weeks, we worked to deploy a data science platform for our client. It is a one-stop platform for data analysis and visualisation. This platform consists of interconnected applications, which are the motor which enables the productivity of the data scientists sitting at the wheel.
Highlights from Shiny in Production (2023)
Published: October 19, 2023
On October 12-13 2023, Jumping Rivers hosted the Shiny in Production conference, delving into all things Shiny! Read on for a rundown of the event highlights.
Shiny in Production: Sponsors
Published: September 28, 2023
There's only two weeks left to go until Shiny in Production 2023! The events team are hard at work getting things ready for the day, and we wanted to take this opportunity to say a huge thank you to our event sponsors!
posit::conf(2023)
Published: September 14, 2023
Our bags are packed, flights are booked, and we're ready to head stateside for posit::conf(2023). We're excited to be sponsoring the event this year, as well as presenting a few talks ourselves.
Shiny in Production: Full speaker lineup
Published: September 7, 2023
We are pleased to announce the full line-up for this year's Shiny in Production conference! In this blog post, we've pulled together all of the talk abstracts and speaker bios, to give you a full view of what to expect!
RSS International Conference 2023
Published: August 29, 2023
The Royal Statistical Society International conference is next week and Jumping Rivers are exhibiting at the conference, as well as delivering workshops and talks. The draft program can now be viewed online, so we wanted to let you know where you can find us at the event and some of the other sessions we are looking forward to.
Best Practices for Data Cleaning and Preprocessing
Published: August 17, 2023
Before you embark on your data science journey, it's crucial to equip yourself with the essential tools for data cleaning and preprocessing. Join us as we explore the vital role that data cleaning and preprocessing play in ensuring the quality and integrity of your datasets.
SatRdays London 2023 - Recordings
Published: July 27, 2023
The recordings from this year's SatRdays London conference are here! Over the next couple of weeks, we will be releasing the recordings of some of the excellent talks from the conference!
Parameterised presentations with Quarto
Published: July 20, 2023
Learn how to generate multiple reproducible presentations at once using Quarto parameters, so you can generate e.g. one presentation for each year in your data set.
Shiny in Production 2023
Published: July 18, 2023
With the early bird deadline approaching, we thought now would be a great time to tell you a bit more about what to expect at this year's Shiny in Production!
Changing the world with Data: An outreach event
Published: July 6, 2023
Earlier this year, two data scientists from Jumping Rivers ran an outreach activity for 14-19 year olds across the UK, in collaboration with the youth charity Speakers for Schools.
July Training Update
Published: July 4, 2023
Embark on your programming odyssey with our extensive range of courses! Never written a line of code in your life? No stress - we offer a mix of introductory courses for beginners as well as more advanced courses for those looking to expand their knowledge further.
Fullscreen Ahead for Shiny Applications
Published: June 8, 2023
Browsers have been implementing variations on a JavaScript fullscreen API for over a decade. Unfortunately, for much of that time the APIs varied across browsers. This made actually using it in production somewhat cumbersome. In this blog, we show you how to put parts of your Shiny application into fullscreen with only a few lines of JavaScript.
June Training Update
Published: June 6, 2023
This summer, we have public courses to take you all the way from the very basics of R, through to using R for statistical modelling, with some data wrangling and intermediate programming in between. Wherever you are on your R journey, take a look at our upcoming courses to see if we can help you on your way.
Shiny in Production 2022: A recap
Published: May 25, 2023
With the planning for this year's Shiny in Production conference well under way, we thought now was a good time for a little recap of what happened last year.
Sponsorship: Conference and useR Groups
Published: May 23, 2023
Just like the world of data science, our ethos is transparency and giving back to the community. We are offering automatic sponsorship for R conferences. All the organisers have to do is complete a quick questionnaire and the money is sent on it’s way.
Why should I use R: Part 3
Published: May 18, 2023
If you've been using Excel for a while, then you've likely entered your comfort zone and remained there. Let's help you make the wise switch to R. In this blog, we will explore the various ways to handle dates in Excel and R.
SatRdays London 2023: Thanks for coming!
Published: May 11, 2023
SatRdays returned to London last month, with a day packed full of talks from expert speakers across a variety of sectors! We'd like to take this opportunity to say a huge thank you to everybody involved in making the day a success!
Diffify - the anniversary update!
Published: May 2, 2023
It's been just over a year since we introduced the world to diffify, our app for comparing package releases. To celebrate reaching this milestone, we're pleased to announce that an "anniversary update" has just gone live! Read on to learn about the latest changes and some exciting plans in the works…
Create a clickable word cloud in Shiny
Published: April 27, 2023
Learn how to create a clickable word cloud that you can use as an input to e.g. filter observations displayed in a table, using wordcloud2 in a Shiny app.
What's new in R 4.3.0
Published: April 20, 2023
R v4.3.0 is released on April 21st, 2023, and continuing a recent theme, R is getting stricter with your code. If you don't know your `&` from your `&&` you may be in for a bumpy ride. Here, we discuss the changes to the logical comparison operators and a few other new features.
Why should I use R: Part 2
Published: April 13, 2023
If you've been using Excel to create plots from your data for a while, you may have got to a point where you want more customisation options, or reproducibility. In this post, we discuss the differences between creating plots in Excel and using ggplot2 in R!
We’re a British Data Awards 2023 Finalist
Published: April 11, 2023
We’re delighted to announce that we’ve been named a Finalist in the British Data Awards 2023. Read on to find out more about the awards, and the categories in which we are finalists!
SatRdays London is now Hybrid!
Published: April 6, 2023
SatRdays London is fast approaching, and we have a couple of exciting announcements to share with you! Read on to find out more.
SatRdays London 2023: Sponsors
Published: March 28, 2023
On 22nd April 2023 we will be hosting SatRdays London, an inclusive, low cost event, which gives R users an opportunity to network and learn from other experts across sectors. In a recent blog post, we introduced all of the speakers for the event! This week, it's the sponsors turn.
Alt Text in R
Published: March 23, 2023
Alt text is text that describes the appearance and purpose of an image. This blog post will show you how to include alt text in your web applications and documents when you've built them in R.
Customising {shinydashboard}
Published: March 16, 2023
Sometimes you want to go beyond the default {shinydashboard} theme. This blog will take you through 3 options—built-in colours, the {fresh} package, and CSS.
Network Error Logging - Important Insights
Published: March 9, 2023
In this blog, we'll discuss the Network Error Logging header from W3C. It's a feature of most browsers that lets a website / application opt in to receive reports about failed network fetches from the browser.
SatRdays London 2023: Speakers
Published: March 7, 2023
SatRdays London is fast approaching, and we are happy to announce our full lineup of speakers for the event! Read on for more info. If you want to join the fun, head over to the conference website to sign up!
Content Security Policy - Why You Need It
Published: March 2, 2023
Content Security Policy (CSP) is a framework of modern (ish) browsers used to give applications an extra layer of security - safeguarding against attacks such as cross-site scripting. In this blog, we aim to introduce the concept of Content Security Policy and teach some of the technical aspects.
Why should I use R?: Part 1
Published: February 23, 2023
Are you an Excel user who's considering switching over to using R? In this blog we'll use both to compare common data wrangling steps.
Shiny in Production 2023: Workshops
Published: February 21, 2023
Shiny in Production is returning to the Catalyst this October! Our workshop lineup has now been finalised, and our first two speakers are confirmed. Read on to find out more.
WHO/Europe: Work smarter; not harder.
Published: February 16, 2023
By automating a few tasks using continuous integration and continuous delivery pipelines, developers at Jumping Rivers spent less time on the trivial and repetitive tasks, and more time making improvements where it really mattered.
February Training Update
Published: February 7, 2023
We have a great list of online public training courses coming up over the next two months! Read on for a taste of what's in store, or head over to our training page for full details and to book!
Improving the responsiveness of Shiny applications
Published: January 26, 2023
This post covers the "why?" and "how?" of making Shiny applications feel like they respond instantaneously to users' interactions.
Events at Jumping Rivers
Published: January 24, 2023
At Jumping Rivers we're all about getting involved in the R community! As such, we host multiple events throughout the year. Read on for information about what we have planned so far for 2023!
UI-driven testing for Shiny: Part 3
Published: January 19, 2023
It pays to extract out some helper functions and / or classes from your test cases. By doing so, your tests will look simpler, the behaviour that you are testing will be more explicit, and you'll have less code to maintain.
UI-driven testing for Shiny: Part 2
Published: January 12, 2023
Here, we will write a simple shiny app (as an R package) and show how to generate tests for this app using {shinytest2}.
SatRdays London 2023
Published: January 11, 2023
SatRdays is returning to London this April! SatRdays are low-cost R conferences, hosted on Saturdays to enable those who usually cannot attend to take part.
UI-driven testing for Shiny: Part 1
Published: January 5, 2023
Automated testing is an essential part of any production-quality software project. Much of the focus in the R world is on testing the individual components of a project, but for those working with {shiny} there are great tools that can test your application as if a user was interacting with it. In this blog series, we focus on {shinytest2}.
December Training Update
Published: December 20, 2022
If you're thinking of picking up a new skill in the new year, take a look at our upcoming public training courses! We have plenty of introductory courses coming up, both online and in-person, so you can hit the ground running after the holidays!
What is S7? A New OOP System for R
Published: December 15, 2022
Unlike other programming languages, there isn't currently a dominant approach to OOP in R. Here's a brief overview of the new S7 package that aims to change that.
I'm an R user: Quarto or R Markdown?
Published: December 8, 2022
Are you an R user considering switching from R Markdown to Quarto? Here are our favourite features that we think R users might benefit from.
Shiny in Production: Recordings
Published: December 6, 2022
Over the last two weeks, we have been releasing the recordings of the talks from our Shiny in Production conference! Read on to take a look for yourself!
Burnout in Data Professionals
Published: December 1, 2022
Data science and data engineering are incredibly cognitively demanding professions. As data professionals, we are required to leverage both our analytical/engineering skills and our interpersonal skills to be effective contributors within our organisations. In this blog, we discuss why this combination could reasonably count as an occupational hazard.
Learning Excel as an R user
Published: November 24, 2022
Recently I came across a situation where I had to use Microsoft Excel for a project. In this blog post I discuss some of the things I found surprisingly difficult when learning Excel as an R user.
Diffify - Python release
Published: November 15, 2022
We are excited to finally release Python content on Diffify! You can now perform version comparisons for 1600 popular PyPI packages. Read on to learn about the new content, and our plans to expand this as we look to the future.
Top 5 Shiny UI Packages
Published: October 27, 2022
There are an increasing number of open-source "add-on" packages that extend both the front end and the back end functionality of Shiny. This blog will highlight 5 UI add-on packages that can massively improve your user experience and also just add a bit of flair to your app.
Automating Dockerfile creation for Shiny apps
Published: October 20, 2022
Deploying shiny applications can be frustrating, making sure your production environment matches your local environment where you can see your application running. In this blog post we explore how we might start writing code to automate the process of creating Dockerfiles for producing images that make our local, running, shiny application able to be deployed in a container.
Training course update - Autumn 2022
Published: October 18, 2022
Here at Jumping Rivers we like to keep our courses up to date so we can bring you training on the latest tools and technologies. To this end, we have recently added two new courses to our listing!
Highlights from Shiny in Production (2022)
Published: October 13, 2022
On October 6-7 2022, Jumping Rivers hosted the Shiny in Production conference! The conference delved into the world of {shiny} and other web based R packages.
Refactoring Russian Doll Code
Published: October 6, 2022
Have you ever inherited a pile of messy code? Or perhaps you wrote some code a long time ago and it needs some TLC? Here are our tips for refactoring messy code.
Shiny in Production: Coming up
Published: October 4, 2022
Shiny in Production is just around the corner and we can't wait to see you all there! Read on for more on what we have in store!
API as a package: Testing
Published: September 29, 2022
Unit testing is an integral part of creating robust applications and codebases. Continuing the API as a package series we explore how you might set up unit tests with {testthat} for your API service.
API as a package: Logging
Published: September 22, 2022
Logging is crucial to understanding what's going on with an application as it runs. There are some good solutions to logging of R shiny applications but less so for plumber applications. Continuing the API as a package series we examine how you might add some automatic logging to your API service written in R using plumber and the logger package.
The Benefits of Learning Data Skills
Published: September 20, 2022
It will come as no great surprise that here at Jumping Rivers, we are huge advocates for learning data skills. There are many benefits to learning at least some basic data skills, even if you don't work explicitly with data.
API as a package: Structure
Published: September 15, 2022
Inspired by opinionated packages on {shiny} app development such as {golem} and {leprechaun}, Jumping Rivers adopted a similar pattern for producing a {plumber} API as a package for one of our client projects. This is one of a series of blog posts discussing the general structure of said package.
Python app deployment with RStudio Connect: Streamlit
Published: September 8, 2022
In this installment of our series on deploying to RStudio Connect we take a look at Streamlit. Streamlit enables quick and easy creation of web applications for machine learning and data science. We will go through a simple app and how to deploy it.
Talks to watch at the RSS International Conference
Published: September 6, 2022
Jumping Rivers are exhibiting at the RSS International Conference 2022, and we'll delivering workshops and talks as well. These are a couple of the sessions we're looking forward to the most!
Python API deployment with RStudio Connect: FastAPI
Published: September 1, 2022
Next up in our blog post series on deploying Python APIs to RStudio Connect is FastAPI. FastAPI is a high-performance web framework for building APIs with Python. Read on to see how you can deploy your FastAPI apps with RStudio Connect!
Python API deployment with RStudio Connect: Flask
Published: August 25, 2022
RStudio Connect (soon to be Posit Connect) is a platform that provides the ability to deploy and share R applications and reports. However, it is not just for R developers (hence the name change). RStudio Connect also supports many Python applications, including Flask. In this blog we will look at how to deploy a Flask app to RStudio Connect.
Hello Shiny Python
Published: August 23, 2022
RStudio conf 2022 had some exciting reveals. Certainly one of the most interesting releases was that of shiny, the excellent web application development framework known in the R community, getting a Python release. Here we will take a first look at creating a simple application.
Have we got NEWS.md for you
Published: August 18, 2022
Roll up, roll up! Most R packages contain a NEWS file which documents the changes between each release. However, there is no definitive convention for how to format this file. In this post we will share some top tips for writing NEWS files, so that by the end you will be able to tell “good” NEWS from “fake” NEWS!
Highlights from rstudio::conf(2022)
Published: August 11, 2022
July 25 - 28 2022 saw thousands of people attend rstudio::conf(2022) from all over the world, including a few of us from Jumping Rivers. Here's a recap of the big news, and a few of our personal highlights from the conference!
Diffify - 3 months on
Published: August 9, 2022
What a few months it's been for Diffify, our new app for comparing package releases! We’ve been delighted with the enthusiastic response and quick adoption by the R community. Read on to learn about just some of many updates we’ve made to the app since launch day, and how we are actively addressing your feedback as we look to the future.
Theming diffify for accessibility: Part 2
Published: August 4, 2022
This article looks at how we added new themes to diffify.com to make the site more accessible to users with visual impairments and the tools we used to check the suitability of our new themes.
Theming diffify for accessibility: Part 1
Published: July 28, 2022
In this post we'll look at low contrast sensitivity and colour vision deficiencies and why we wanted to make changes to diffify.com to make it more accessible to users with these conditions.
RStudio2022: Talks to watch out for
Published: July 26, 2022
rstudio::conf(2022) is well underway and, after two days of workshops, the main talks begin tomorrow. Here are our highlights of talks we're most excited about!
Recreating the Shiny App tutorial: Part 2
Published: July 14, 2022
RStudio Connect supports a spectrum of data products, static or dynamic, developed in R and Python: Dashboards, applications, APIs, reports, and much more - we can also host ReactJS applications! This series will focus on recreating a Shiny App tutorial using ReactJS. In part 2, we will walk through an example.
Jumping Rivers and the Data Science Community
Published: July 12, 2022
At Jumping Rivers, we love data science! Surprised? Didn't think so ... But, did you know that as well as providing training and consultancy, we also like to get involved with the data science community!
Recreating the Shiny App tutorial: Part 1
Published: July 7, 2022
RStudio Connect supports a spectrum of data products, static or dynamic, developed in R and Python: Dashboards, applications, APIs, reports, and much more - we can also host ReactJS applications! This series will focus on recreating a Shiny App tutorial using ReactJS. In part 1, we introduce the required concepts and technologies.
Developing React Apps in RStudio Workbench
Published: June 30, 2022
RStudio Workbench provides a development environment for R, Python, and many other languages. When developing a performant web application you may progress from Shiny towards tools like Plumber. As a Shiny developer, one popular front-end library you might already be familiar with is React.
NEDS Meetup
Published: June 28, 2022
If you're based in the North East of England and you're looking for a place to discuss all things data science with like-minded people, then you might want to check out the North East Data Scientist (NEDS) Meetups!
Custom colour palettes
Published: June 23, 2022
Choosing which colours to use in a plot is an important design decision. This blog post will show you how to make a custom colour palette that is compatible with {ggplot2}.
WHO/Europe: Offload Shiny's Workload
Published: June 21, 2022
The great strength of Shiny is that it simplifies the production of data-focused web applications, making it relatively easy to present data to users / clients in an interactive way. However, data can be big and data-processing can be complex, time-consuming and memory-hungry. In this post we demonstrate how we tackled this issue in a recent project.
Shiny in Production Update
Published: June 14, 2022
The organisation for Shiny in Production is well under way - our list of speakers is now up on the conference website, and registration is open, with Early Bird tickets available until July 31st! Read on for more details.
An introduction to H2O
Published: June 9, 2022
H2O.ai is a company which develops products for easy, scalable, machine learning and artificial intelligence. This post will talk through who H2O.ai are and what software they provide for your machine learning needs.
New training courses
Published: June 7, 2022
The trainers here at Jumping Rivers have been busy developing a host of new courses for your programming pleasure! We have recently developed several new courses, which are now available to view on our course list.
Creating a Reproducible Example
Published: May 31, 2022
Complex software bugs are often difficult to reproduce. Unfortunately, without this reproducibility it can be hard to get help and input from others. In this post we discuss a particularly nasty bug we encountered and how we made it reproducible.
Accessibility in R applications: {shiny}
Published: May 19, 2022
Web content accessibility is an important topic to consider when building web based applications. {shiny} is an excellent tool that allows data practitioners a relatively simple, quick approach to providing an intuitive user interface to their R code via a web application. Here we explore accessibility in the context of a {shiny} application.
Shiny in Production (2022)
Published: May 13, 2022
This October, Jumping Rivers will be holding our Shiny in Production conference! Hosted in the centre of Newcastle Upon Tyne, UK, this conference will delve into the world of {shiny} and other web based R packages.
The importance of web accessibility standards
Published: May 12, 2022
The web is an increasingly critical resource for many aspects of life. Striving to make your content accessible is essential to provide equal opportunity and access for all.
Food Hygiene Ratings and Deprivation
Published: May 5, 2022
All food establishments in England & Wales have a Food Hygiene Rating. A value of 0 suggests this is a place to avoid, whereas a value of 5 gives you confidence in the restaurant. In this post, we show that (sadly) hyigene ratings are linked to deprivation.
Diffify
Published: April 29, 2022
Welcome to Diffify, the tool that provides you with a comparison between different versions of any R package stored on the CRAN repositories.
Upcoming R Conferences (2022)
Published: April 8, 2022
The daffodils are out, the sun is shining(ish), spring is in the air! And that means that it’s time to start planning for the conference season.
New features in R 4.2.0
Published: April 1, 2022
R version 4.2.0 is about to be released. This release includes an update to the native pipe, changes to logical operators and improvements to the help page. In this blog post, we take a look at (some of) these new features. Highlighting (in our opinion) the most exciting changes.
Forgotten features of R 4.0.0
Published: January 25, 2022
R 4.0 was released almost two years ago. However, the majority of R users didn't immediately adopt the new version due to obvious constraints when updating software. The consequence is that many of the new and useful features are forgotten about. This post highlights the features as we've moved to R 4.0.
Thinking about maps and ice cream
Published: December 21, 2021
Creating 30 maps for the 30 Day Map Challenge in November 2021 was indeed a challenge, but over the course of the month I developed a process for approaching the problem. This blog post will focus on the thought process behind creating maps rather than the technical aspects of writing the code.
Job vacancies at Jumping Rivers!
Published: December 15, 2021
In line with the continuous growth at Jumping Rivers, we are looking to expand our team of dedicated professionals working in our teams. If you are enthusiastic and keen to develop your skills in cutting edge data science disciplines or infrastructure please read on!
2020 Training Review
Published: October 22, 2021
Our annual training review is back! Like many other training providers, we had to pivot to online learning in 2020, which brought with it challenges but also new opportunities. The review will show you what the year looked like for our trainers and training course attendees, including which trainer taught the most courses!
Git: Moving from Master to Main
Published: October 19, 2021
In 2020, GitHub took the correct decision to change the default branch from master to main. For single, independent repositories, this is relatively straightforward. But moving groups or organisations is more complex and requires planning.
Learn D3 in RStudio with Scooby-Doo
Published: October 12, 2021
Learning D3.js can be pretty overwhelming as an R user. Luckily, the {r2d2} package lets you keep your data cleaning steps in R and easily incorporate any visualisation in R Markdown reports and R Shiny dashboards. This tutorial-style blog will take you through creating your first D3 visualisation with a bit of Scooby-Doo along the way.
Understanding the Parquet file format
Published: September 27, 2021
Apache Parquet is a column storage file format used by many Hadoop systems. This post describes what Parquet is and the tricks it uses to minimise file size. We also discuss how to use Parquet, within an R workflow.
Webinars: R in Production
Published: July 19, 2021
Bridging the gap between data science and IT teams is much easier than you might expect! This two-part webinar will discuss why open source languages are suitable for enterprise data science, and how data scientists can work with the IT team to get their organisational buy-in.
Delete repositories with {gh}
Published: July 13, 2021
Forking repositories is a great way to learn from and contribute to others' code. However, you may quickly end up with a cluttered user space, with old forks lingering around. Manually removing repositories is slow and tedious. Read more to find out how you can use the {gh} package to speed up the process.
Job vacancies at Jumping Rivers!
Published: June 1, 2021
In line with the continuous growth at Jumping Rivers, we are looking to expand our team of dedicated professionals working in our teams. If you are enthusiatic and keen to develop your skills in cutting edge data science discliplines or infrastructure please read on!
Jumping Rivers 2021 Online Training Schedule
Published: May 18, 2021
Good news! We have updated our public course page with our new programme of courses, being delivered between May and November. Early bird offers & academic discounts currently available.
New features in R 4.1.0
Published: May 17, 2021
A new R release (v 4.1.0) is due for release on 18th May 2021. This version brings in a few exciting features, such as anonymous functions and the native pipe. Here, we summarise these and other notable changes.
Moving to Hugo
Published: March 29, 2021
Moving your website to Hugo brings a lot of benefits, but there are also challenges. In this post, we'll discuss our top tips for making that move to Hugo as smooth as possible.
Default knitr options and hooks
Published: March 12, 2021
Having consistent {knitr} options and hook, improves reproducibility and reduces errors. This post provides a set of standard {knitr} chunk arguments to simplify workflows and make consistent graphs.
Job: Shiny Developer
Published: March 12, 2021
We are expanding the Jumping Rivers team. If you know {shiny} then this could be the perfect role for you!
External Graphics with knitr
Published: February 23, 2021
Adding images with {knitr} is straightforward; we simply use include_graphics(). However, it is easy to add an image that is too large, or has the wrong dimensions. This post tells you what to watch out for, and how to optimise your images for the web.
Selecting the correct image file type
Published: February 19, 2021
When including graphics within a markdown document, it's crucial to use the correct file type from generating graphics. However, there isn't one size fits all, instead, we should choose what's most appropriate for the image.
Image sizes in an R markdown Document
Published: February 15, 2021
Setting the correct images sizes in an R markdown document, can be tricky. There are a number of different arguments that all interact with each other. In this post, we look at how we should create the correct image sizes using {knitr}.
Writing a Personal R Package
Published: February 7, 2021
"If you've been using R for a while, you've likely accumulated a hodgepodge of useful code along the way. While you might be tempted to keep the code in a set of disparate file, this quickly becomes unmaintainable. Instead, you should consider placing the code in a personal R package."
The (Delayed) 2019
Published: October 13, 2020
Don’t we all miss 2019 (blame Covid for the long delay in this post). The days of going to work and seeing your work colleagues face to face - and for some of you, attending one of our on-site training courses! 2019 was a great year for us.
Detecting Security Vulnerabilities in R Packages
Published: August 28, 2020
One of our main roles at Jumping Rivers is to set-up and provide ongoing maintenance to R, Python and RStudio infrastructure. This typically involves ensuring software is up-to-date and making sure everything is running smoothly. The {oysteR} package is an R interface to the OSS Index that allows users to scan their installed R packages.
