A pink and blue graphic reading "apply for our opportunity scholarship to posit::conf(2026)."
We are covering 40 people's travel, lodging, and registration for posit::conf() this fall! If you are from a group that is underrepresented in data science or open source, please consider applying for the Opportunity Scholarship—we'd love to have you join.
posit.co/blog/apply-t...
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! 💜
I also want to share that I am currently the only organiser for my home chapter @rladiesamsterdam.bsky.social. I’d love to collaborate with other chapters so if you’re planning an (online) event and want me in, pls let me know!
Big thank you to the community, you are the best! 💜 #Rladies #Rstats
My #RoCur period is coming to an end. After this week, my heart is full & I feel so grateful to be part of this community! 💜
We talked about #DataViz on #TidyTuesday, the #rainbowR conference and #Rstats for #SEM 📈
For more of that you can find me here: @josefina-bernardo.bsky.social 🤓
#Rladies
One of the questions in our @rainbowr.org 📊 workshop, was "could you make the beeswarm chart interactive?" 🐝 The answer is "yes, you can" and here's how: nrennie.rbind.io/blog/interac...
#RStats #DataViz #ggplot2 #VisLGBTQ
MacBook screen showing RStudio in dark mode. The bottom right corner shows power as a function of measurement time point. Power to detect an effect the further apart measurement points are.
Today I debugged code for a simulation study on the association of home environment and child development 🤓📚
Previous versions of this plot included random jitters due to some unknown cause (looking at you #OpenMx 👀) but I fixed it now 📈
How have you used #RStats this week?
#Rladies #ggplot2
A photo of a laptop screen with a thank you banner on a rainbow background. The upper right corner shows a picture of a person in a red shirt.
It’s a wrap! 🌈 The @rainbowr.org conference closed with a keynote by @hadley.nz on Claude 💻
Thank you to @ellakaye.co.uk @damiepak.bsky.social Katlyn, Lea @tinarozsos.bsky.social @northernmaps.bsky.social @oberman.bsky.social @ddsjoberg.bsky.social @statsrhian.bsky.social for organizing 🫶
I want to highlight a cool website by Hermine Maes: hermine-maes.squarespace.com. She has shared code for many models used in #StatisticalGenetics.
Thank you for reading my (short) overview of SEM and how to learn it - please ask away & let me know about your experience with #lavaan or #OpenMx 😀
#SEM is a vast field that I still only know a part of. What worked best for me was understanding the theory first and then writing minimal models from scratch (e.g., a regression, a CFA)
#OpenMx has a culture of script-sharing and wrapper functions, which has been helpful as well.
#RStats #RLadies
#OpenMx only really clicked for me when I understood matrix representations. I cannot recommend this video enough: www.youtube.com/watch?v=AbPf... for understanding how that works.
OpenMx also has a YT channel & user manual which go into all kinds of models: openmx.ssri.psu.edu/index.php/ #RStats
Sometimes, it’s quite inconvenient to write out all the formulas by hand. In that case, we can use matrix algebra.
To do this in R, we can use the #OpenMx package. OpenMx has, at times, been the bane of my existence 🙃 I recommend having a look at the QuickStart guide: vipbg.vcu.edu/vipbg/OpenMx...
To get started in #lavaan we just take a path diagram and write out the relationships between the variables, see here:
lavaan.ugent.be/tutorial/sem...
A neat #Rpackage for visualizing results in lavaan is semPlot, also by @sachaepskamp.bsky.social. It can be used to visualize models and results.
To get started with SEM, I've watched a few videos by @sachaepskamp.bsky.social, who made his teaching materials available: www.youtube.com/@Sacha_Epska...
Like in a regression, we can write the relationships between variables using formulas. In R, we can easily do this using the #lavaan package 📦
Path diagram of a structural equation model with three latent variables called ind60, dem60, and dem65. ind60 has three indicators, dem60 and dem65 each have four. dem65 is regressed on dem60 and ind60. dem60 is regressed on ind60.
So, a thread about how I have learned #SEM in #R as a #PhD student in #StatisticalGenetics.
I’ve heard SEM be described as a “system of regressions”, but in addition to observed variables, we also have latent/unobserved variables.
We can represent these variables in a path diagram (lavaan.org) :
Whew, and it's done! Thanks to everyone who came to my RainbowR workshop on LLMs for Data Analysis in #rstats! First time with that content in front of an audience, so I appreciate the excellent questions folks asked (and double thanks to everyone who filled in the feedback forms!)
Lovely first day of the #rainbowR conference with a trivia quiz and social by @libbyheeren.bsky.social and @damiepak.bsky.social 🥰🌈
Planning to finally post about #SEM tomorrow. If you have questions about working with SEM or you use #lavaan or #OpenMx please let me know in the comments! #RStats
#rainbowR conf is todayyyyy! And tomorrow. If you're registered, join @damiepak.bsky.social and I for a short trivia game in about an hour-ish! And then, a quick social 🥳 #rstats #rainbowrconf
Awesome, thank you! I’ll have a look at that book 👀
The data.table equivalent to pipes is chaining which is just putting operations behind each other: dt[…][…]. You can read more about data.table and pipes here: www.r-bloggers.com/2024/01/pipi... #Rstats #Rladies #tidyverse #magrittr
A note on efficiency: For most of what I do either pipe is fine. But for really big datasets I started using the data.table package: r-datatable.com by @healthandstats.bsky.social et al. It took some time for me to understand but I was blown away by the difference in speed! #RStats #DataScience
Another ‘special pipe’ I have used before is %<>% which is a pipe + assign. You can read more about (magrittr) pipes in Chapter 18 of the book “R for Data Science” (r4ds.had.co.nz/pipes.html) This book has helped me to understand the #tidyverse and broke #ggplot2 wide open for me!
A thread on pipes since my #RoCur period fell right in the middle of a #baseR |> vs. #magrittr %>% debate: I was fully ready to advocate for the base R pipe, but yesterday I wanted to use cor() at the end of a pipe and Stack Overflow (yes, I know) reminded me of this gem:
mtcars %$% cor(disp, mpg)
Concluding this #TidyTuesday by sharing a guide on getting figures in #ggplot2 ready for publication!
Tomorrow I will share a bit more about how I use #Rstats in my own work in #StatisticalGenetics 🧬
Very excited to see some talks at the #rainbowR 🌈 conference tomorrow. Many #Rladies will give workshops and attend so please feel welcome to tag this account if you post about it. Also, let me know in the comments if you will attend! 📈🌈 @rainbowr.org #RStats
Program: pretix.eu/rainbowr/con...
Thank you!!!
I personally use ggthemes and the neat wrapper package #tidyplots (tidyplots.org) to quickly get to a professional-looking plot! 🖼️ The tidyplots developer @jbengler.de has a lot of example code available on his profile.
What is your favorite #DataViz hack? 📈
#RStats #RLadies
Every #TidyTuesday I am amazed by what #DataViz Queen @nrennie.bsky.social can create in #ggplot2!
Her TidyTuesday cookbook 📕🍜 is available here: nrennie.rbind.io/art-of-viz/ and goes into best practices and tricks. I also love the GIFs she creates using the camcorder #Rpackage!
Thank you, it was certainly a learning experience!!
Foto of a feminine nonbinary person in a purple floral shirt in front of a purple poster. The poster is displaying a structural equation model analysing the influence of parental education on children’s school grades. The person is smiling cheekily to the side.
Foto of a child with four fluffy buns and blue sunglasses. The child has lowered the sunglasses below their nose and is gazing over them.
Hi, I’m this week’s curator, Josi! I‘m a PhD student in statistical genetics 🧬 and use #RStats to do #SEM. I dabble in #DataViz and recently wrote my first #Rpackage. My hobbies are reading #Fantasy books 📚 and #maximalism. You may catch me at a conference matching my outfit to my poster 🤓🧜🏽♀️ #rladies
Curator Josi, PhD candidate at Vrije Universiteit Amsterdam. Josi is currently working on a simulation study on a structural equation model using the OpenMx package.
The first #RLadies curator of 2026 is @josefina-bernardo.bsky.social 💜
