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Martine Jansen

@martinejansen.bsky.social
133 followers 162 following 132 posts

Institutional researcher for higher education , statistician, data scientist, and #rstats enthousiast

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Martine Jansen @martinejansen.bsky.social · 22/09/2026
Please help me understand this. Does this imply anything for my excel macro's, and if so, how to handle it? Thanks! techcommunity.microsoft.com/blog/windows...
techcommunity.microsoft.com
VBScript deprecation: Timelines and next steps | Windows IT Pro Blog
Learn about the deprecation of Visual Basic Scripting edition.
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Marleen Stikker @marleen.oso.social · 21/09/2026
Meta: “any mention of civil rights, feminism or social reform (topics that are central to Woolf’s work) are usually classified as ‘social topics’ by our automatic system” and are filtered out. “ www.theguardian.com/technology/2...
theguardian.com
Meta bans ads for Virginia Woolf play in Spain because they cover ‘social topics’
Facebook and Instagram ads mentioning ‘civil rights or feminism’ are filtered out, Meta tells theatre
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Nicola Rennie @nrennie.bsky.social · 11/09/2026
Slides and resources: nrennie.rbind.io/rss-2026-tid...
nrennie.rbind.io
Developing your data skills
How to keep learning with TidyTuesday
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Emil Hvitfeldt @emilhvitfeldt.bsky.social · 06/08/2026
Another reminder that I'll be doing a 2 hour free online workshop about all things slidecrafting on August 12, 9:00 AM PDT! pos.it/slide-wrkshp #quarto #slidecrafting
pos.it
Slidecrafting Workshop with Emil Hvitfeldt
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Adam Rawnsley @arawnsley.bsky.social · 04/08/2026
Today, August 4, 2026, is the setting of Ray Bradbury’s short story “There Will Come Soft Rains” about a fully automated house continuing on after the family who lived there and the world around it died in a nuclear blast.
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Chelsea Parlett @chelseaparlett.bsky.social · 29/07/2026
There are genuinely no words to express how much I LOVE my public library and how HAPPY I am it exists and that some of my tax dollars go towards it🥹 What a beautiful thing to have not only books for FREE but a place to exist without paying for anything, a range of services, a place to meet! 🥰📚
static.klipy.com
Fluffy Persian Cat in a Library
ALT: Fluffy Persian Cat in a Library
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Martine Jansen @martinejansen.bsky.social · 15/07/2026
#rstats insight of the day (or even month ;) ): when using `stringr::str_c` to collapse a vector, I thought it would be nice if `c("a","b","c")` would become `"a, b and c". So I was thinking of writing a function to do that, would be super useful. A look in the help revealed the existence of ...
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Emil Hvitfeldt @emilhvitfeldt.bsky.social · 17/06/2026
Come join me for a all new slidecrafting workshop! 2 hours of all new content, teaching you to go from zero to hero in quarto slides! It is free and open to anyone, very minimal quarto knowledge required, we are starting with the basics! pos.it/slide-wrkshp #quarto #slidecrafting
pos.it
Slidecrafting Workshop with Emil Hvitfeldt
This will be a 2-hour workshop (with a short break) led by Emil Hvitfeldt all about making great slides in Quarto! Wed, Aug 12, 2026 12:00 PM EDT
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Martine Jansen @martinejansen.bsky.social · 17/06/2026
Thanks to @anndooms.bsky.social I read about the Rousseeuw prize for Statistics. Congratulations to the laureates of 2026: Brian Ripley, Martin Maechler, Kurt Hornik, Peter Dalgaard and Luke Tierney! #rstats rousseeuwprize.org/2026
rousseeuwprize.org
The Rousseeuw Prize for Statistics
The Rousseeuw Prize for Statistics is a biennial prize to celebrate outstanding contributions to statistics research.
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Mine Doğucu @minedogucu.com · 16/06/2026
Hello #rstats and #tidyverse lovers, learners, and teachers. We just released 5 additional chapters of Hello Data Science book, bringing the total to 10 chapters & completing the Exploratory Data Analysis portion. More to come on modeling and inference. hellodata.science
hellodata.science
Hello Data Science
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Martine Jansen @martinejansen.bsky.social · 22/04/2026
Anyone a suggestion on how to reduce font size in an #rstats #tinytable notes? With `tinytable::style_tt(fontsize = 0.8)` the font size of the font in the table gets smaller, but not the notes. It is for in a #quarto to #typst. Thanks!
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Martine Jansen @martinejansen.bsky.social · 12/04/2026
Day 12 of the #30DayChartChallenge, FlowingData Sankeyplot with gradient, made with #rstats , #ggplot2 and a function from my wisselstroom package. Where do havo graduates in the Netherlands continue their education, flows per profile and destination (type and sector). Data: duo.nl/open_onderwi...
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Martine Jansen @martinejansen.bsky.social · 11/04/2026
Day 9 of the #30DayChartChallenge, Wealth Made with #rstats and #ggplot2. The chart is about drop out rates first year Dutch bachelor students in higher professional education related to parents income. Data from page 25 in www.onderwijsinspectie.nl/documenten/2....
Scatterplot with facets per income group parents, on x axis drop out rates, on y axis years from 2013 to 2022. Dots show dropout rate is slightly higher when income parents is lower, and dropout during covid years 2019 and 2020 is lower.
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Martine Jansen @martinejansen.bsky.social · 09/04/2026
Anyone a suggestion on how to have two different stylings for a level1 heading in a #quarto #revealjs presentation? I have one style now in my .scss, but sometimes I need a level 1 that is a bit different.
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Martine Jansen @martinejansen.bsky.social · 08/04/2026
Unfortunately I dropped this nice #vvsor young statisticians mug. @vvsor.nl , do you have a suggestion how I can get a new one?
Broken young statisticians mug, surrounded by little decorative easter chicklets
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Martine Jansen @martinejansen.bsky.social · 04/04/2026
Day 4 of the #30DayChartChallenge, Slope Made with #rstats and #ggplot2. The chart is about exam pass rates with data from opendata.cbs.nl. The nice {geomtextpath} allows the legend to be part of the lines.
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Martine Jansen @martinejansen.bsky.social · 03/04/2026
Day 3 of the #30DayChartChallenge, Mosaic Made with #rstats and #ggplot2. The data is from duo.nl/open_onderwi... . The plot describes what the next step in education is for graduates from secondary education in the Netherlands.
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Martine Jansen @martinejansen.bsky.social · 02/04/2026
Day 2 of the #30DayChartChallenge, Pictogram Made with #rstats and #ggplot2. The data is from duo.nl/open_onderwi..., p 154. I used `{showtext}` so I could have the cap via unicode \uf19d in a `geom_text()`.
2 plots showing time to degree for students that did not switch (left) and did switch (right)
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Martine Jansen @martinejansen.bsky.social · 01/04/2026
Day 1 of the #30DayChartChallenge, Part-to-Whole Made with #rstats and #ggplot2. The data is from www.ocwincijfers.nl/sectoren/pri... . I got the fonts the way I wanted thanks to www.cararthompson.com/posts/2024-0..., the nice retro color palette is from www.schemecolor.com/retro-blue-a....
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Jennifer Liss @metajen.bsky.social · 26/03/2026
"Developers who fully delegated to AI produced working code but failed conceptual quizzes afterward. They couldn't debug what the AI had written for them. They had the output without the understanding."
psychologytoday.com
Adults Lose Skills to AI. Children Never Build Them.
Discussions of cognitive offloading often miss a critical distinction: What AI does to a 45-year-old's brain is categorically different from what it does to a 14-year-old's.
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#30DayChartChallenge @30daychartchall.bsky.social · 18/03/2026
Are you ready for the next #30DayChartChallenge? 🚀 Only 2 weeks left until the 6th edition starts — it’s time to reveal this year's topics 🎉 1 prompt for each day of April across 5 categories to spark inspiration, experimentation, and learning 📊 Who’s in? 👀 #dataviz #datavisualization
A banner with the prompts for the 6th edition of the #30DayChartChallenge.
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Martine Jansen @martinejansen.bsky.social · 10/03/2026
About to start: Publiek Domeindag van oa de Koninklijke Bibliotheek
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R-Ladies Amsterdam @rladiesamsterdam.bsky.social · 03/09/2025
WE WANT YOU! 🫵 Our organiser @kylieainslie.bsky.social is leaving us to go Down Under. 🦘 We're looking for new organisers to continue with @josefina-bernardo.bsky.social to keep @rladiesamsterdam.bsky.social the wonderful community it is. If you're in NL and interested, please get in touch! 💜
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Ted Laderas @tladeras.bsky.social · 04/02/2026
I'll be teaching a short intro to Shiny workshop for @rladiesremote.bsky.social on February 17! Registration details are below, or you can register by going here: meetu.ps/e/PQt4g/ypHs... #shiny #rstats #databs
Flyer for a gradual intro to shiny workshop on February 7 at 8:00 AM PST - url to register is in post
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Martine Jansen @martinejansen.bsky.social · 02/02/2026
Be part of pi! www.tudelft.nl/evenementen/...
tudelft.nl
Wereldrecord TU Delft - het GROOTSTE levende Pi-teken
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CAUSALab @causalab.org · 29/01/2026
View the presentation recording on YouTube: youtu.be/Q8A5NEmRxyM?...
youtu.be
2026 Methods Series with Ellie Murray
YouTube video by CAUSALab at Harvard T.H. Chan
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The R Foundation @r-foundation.bsky.social · 22/01/2026
We are responding to this call for evidence: ec.europa.eu/info/law/bet... Do you have concrete examples of the added value of #Rstats in the public or private sectors? Include the most important factors (risk, lock-in, security, innovation...) to assess the added value. Thanks!
ec.europa.eu
European Commission - Have your say
European Commission - Have your say
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Martine Jansen @martinejansen.bsky.social · 14/01/2026
Anyone a solution for how to generate in an #rstats #quarto doc a certain number of R chunks each making a table, each with their own label and caption? I am making a lot of docs, and each one has their own set of tables. I was thinking of a function that spits out multiple R chunks with options?
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Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 09/01/2026
Statistical Rethinking 2026 Lecture B01 Multilevel Models is online. This is the first lecture of the "experienced" section, in which we start with multilevel models and venture into vast covariance spaces. Full lecture list still here: github.com/rmcelreath/s...
youtube.com
Statistical Rethinking 2026 - Lecture B01 - Multilevel Models
YouTube video by Richard McElreath
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Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 09/12/2025
I'm teaching Statistical Rethinking again starting Jan 2026. This time with live lectures, divided into Beginner and Experienced sections. Will be a lot more work for me, but I hope much better for students. I will record lectures & all will be found at this link: github.com/rmcelreath/s...
course schedule as a table. Available at the link in the post.
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Eric Wastl @was.tl · 30/11/2025
The first #AdventOfCode 2025 puzzle comes out in about five hours! What's your plan? What language(s?!) are you using? What's your IDE of choice and why is it Vim? Do you have a comfy chair? Did you check out the beta release of Lua 5.5? How much sleep have you gotten? Drinking enough water? 🌟 ❤️ 🎄
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ᴅʀ. ᴍᴏᴡɪɴᴄᴋᴇʟ'ꜱ @drmowinckels.io · 30/11/2025
🎄 ANNOUNCEMENT: R Package Development Advent Calendar 2025! 🎄 Starting December 1st, I'm launching a 25-day journey through modern R package development. here's why you should follow along 🧵 #rstats #RPackageAdvent2025 #OpenSource
A festive digital illustration features the blue R logo wearing a red Santa hat with white trim on the left. To its right stands a green Christmas tree made entirely of curly braces arranged in a triangular shape. White and light-blue %>% pipe symbols float across a dark blue, starry background like snowflakes. A speech bubble above the R logo says “Ho Ho Ho! 📦” in red text. At the bottom, white text reads: “R Package Development Advent Calendar 2025” and below it, “25 Days of Coding Magic • Dec 1–25.”
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Ionica Smeets @ionica.mathstodon.xyz.ap.brid.gy · 16/09/2025
Fijne Pythagoras dag! 9-16-25 :pythagoras:
Een rechthoekige driehoek met zijden 3, 4 en 5
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Adam Kucharski @adamjkucharski.bsky.social · 10/09/2025
Want a large language model that never hallucinates? Easy: just get it to always print “I don’t know”, regardless of the input. If you find this solution is a bit unsatisfying, you’re not alone. But it hits on a crucial trade-off with learning machines and decision-making more generally. New post:
kucharski.substack.com
An LLM that never hallucinates
There are two big errors we can make with information, but one often gets forgotten
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Martine Jansen @martinejansen.bsky.social · 08/09/2025
This will (hopefully :) ) make table polishing in #quarto #rstats #typst so much more easy: #tinytable in vincentarelbundock.github.io/tinytable/vi...
vincentarelbundock.github.io
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Martine Jansen @martinejansen.bsky.social · 20/08/2025
Anyone an idea where I can find the source code of ardata.fr/ggiraph-book/ ? The github link on the website is dead. #ggplot2 #rstats #ggiraph. Thanks!
ardata.fr
ggiraph-book
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Aki Vehtari @avehtari.bsky.social · 02/08/2024
All three books I've co-authored are freely available online for non-commercial use: - #Bayesian Data Analysis, 3rd ed (aka BDA3) at stat.columbia.edu/~gelman/book/ - #Regression and Other Stories at avehtari.github.io/ROS-Examples/ - Active Statistics at avehtari.github.io/ActiveStatis...
The cover of Bayesian Data Analysis bookThe cover of Regression and Other Stories bookThe cover of Active Statistics book
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Benjamin Douglas @bendouglas.bsky.social · 02/08/2025
That’s it I’m firing R because my results weren’t significant
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Martine Jansen @martinejansen.bsky.social · 23/07/2025
#rstats #ggplot Revelation of the day: `geom_*()` and `stat_*()` are wrappers for `layer() ` with respectively a fixed geom or stat argument. Now `stat_*()` suddenly feels less complex. Thank you @cedricscherer.com and @yan-holtz.bsky.social for making www.ggplot2-uncharted.com
ggplot2-uncharted.com
Statistical Transformations | ggplot2 Uncharted
ggplot2 layers apply statistical transformations to data before plotting. Customizing these using the stat argument and stat_*() layers enables flexible, advanced visualizations.
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Michael Friendly @datavisfriendly.bsky.social · 20/07/2025
For a book I'm writing I want to print text in colors. #rstats #quarto This gist: gist.github.com/friendly/b2a... defines a colorize() function that can be used easily for HTML and LaTeX/PDF documents in .qmd and .rmd files.
gist.github.com
Render text in color for Markdown / Quarto | Format refs to packages in inline text
Render text in color for Markdown / Quarto | Format refs to packages in inline text - colorize.R
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Tom Gauld @tomgauld.bsky.social · 20/07/2025
My cartoon for this week’s @theguardian.com books.
Two figures approach the Baggage Reclaim area of an airport. 

One says “We wouldn't need to put things in the hold if you brought fewer books on holiday.”

Arriving on the carousel, amongst the bags and suitcases is a very large, well-stocked bookcase.
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rainbowR @rainbowr.org · 07/07/2025
🌈 🌐 rainbowR conference: online, early 2026 🌐 🌈 Are you LGBTQIA+, do you code in R, and would you like to get involved in rainbowR’s first-ever conference? We are looking for people to join our conference organising committee! ➡️ rainbowr.org/conference 🗓️ 1st meeting: July 9, 4pm UTC
rainbowr.org
Conference – rainbowR
Join our conference organising committee! See our conference page for more info.
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James Balamuta @coatless.bsky.social · 06/07/2025
Scattered links 🔗 driving you crazy in a post? The linkate Quarto extension automatically collects every URL and creates a tidy "Links" section at the bottom. Just add one line to your YAML! 📚 Docs: quarto.thecoatlessprofessor.com/linkate/ 💻 Repo: github.com/coatless-qua... #quarto
A browser screenshot showing the linkate extension demo page rendered in HTML. The page displays the linkate hexagonal logo on the left sidebar and demonstrates different types of links (Basic Links, Reference-Style Links, Mixed Link Types) in the main content area. At the bottom, a "Links" section shows a bulleted list containing all URLs automatically collected from throughout the document, including links to Quarto, GitHub, CRAN, R Project, Python, and other resources.A hexagonal logo for the "linkate" extension featuring a dark blue background with white text reading "linkate" at the bottom. The center displays an abstract network design with interconnected oval shapes in orange and red gradients connected by thin lines, representing linked elements converging around a central hub.
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Marlies ter Voorde 🏳️‍🌈 @mtvtjilpt.bsky.social · 21/06/2025
Een vrouw die ik zeer bewonder zei ooit: toekomstdromen uitspreken vergroot de kans dat ze uitkomen. Nu dan. Ik zou dolgraag maatschappijkritische rijmpjes willen maken voor een kwaliteitskrant. Gerijmde columns, als het ware, zoals bijgevoegd voorbeeld. PS Het was @ionica.mathstodon.xyz.ap.brid.gy
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R-Ladies Amsterdam @rladiesamsterdam.bsky.social · 16/06/2025
🚨 New Event 🚨 From Code to Crisis Response: Using #rstats for Public Health Impact at the CDC w/ @kcharniga.bsky.social 📅 July 1, 2025 ⏰ 16:00-17:00 CET 🔗 www.meetup.com/rladies-amst... Join us to learn practical R applications in crisis response and beyond! #rladies #EpiSky #IDSky @rladies.org
R-Ladies Amsterdam event flyer for "From Code to Crisis Response: Using R for Real-World Public Health Impact at the CDC" presented by Kelly Charniga, PhD. The event is scheduled for Tuesday, July 1, 2025 from 16:00-17:00 CET. The flyer features the R-Ladies Amsterdam logo with illustrated Dutch buildings and a bicycle, and includes a photo of the smiling presenter wearing a light blue hoodie outdoors with a small dark dog.
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Martine Jansen @martinejansen.bsky.social · 12/06/2025
Looks like #rstats {datapasta} will save a lot of time & typing. Nice!
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Martine Jansen @martinejansen.bsky.social · 11/06/2025
Sometimes the goodreads book recommendations make me grin 😄 It would be interesting to know how many #rstats package book readers also read this one.
RECOMMENDATIONS: Because you are currently reading R Packages: Organize, Test, Document and Share Your Code: Bone, Vol 5: Rock Jaw Master of the Eastern Border by Jeff Smith
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Noah Greifer @noahgreifer.bsky.social · 04/06/2025
Starting to look like I might not be able to work at Harvard anymore due to recent funding cuts. If you know of any open statistical consulting positions that support remote work or are NYC-based, please reach out! 😅
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Nick Huntington-Klein @nickchk.com · 06/06/2025
The second edition of The Effect has been delayed a bit... because there were so many orders they had to switch to a bigger print run! Thank you everyone for your support, and check out the second edition here: www.routledge.com/The-Effect-A...
routledge.com
The Effect: An Introduction to Research Design and Causality
The Effect: An Introduction to Research Design and Causality, Second edition is an excellent teaching text about research design, specifically concerning research that uses observational data to make ...
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