Dan Chaltiel
@danchaltiel.bsky.social
R nerd, developer of the {crosstable} package.
Biostatistician (PharmD, PhD) in clinical cancer research.
https://github.com/DanChaltiel
Biostatistician (PharmD, PhD) in clinical cancer research.
https://github.com/DanChaltiel
Pinned
Dan Chaltiel
@danchaltiel.bsky.social
· Feb 7
Hey #Rstats!
Tired of manually adding @importFrom all over your 📦 #Rpackage?
Say hello to {autoimport}, now on CRAN! 🚀
It parses your code and adds the necessary tags automatically, at the function or package level.
Less typing, more coding! 🔥
github.com/DanChaltiel/...
Tired of manually adding @importFrom all over your 📦 #Rpackage?
Say hello to {autoimport}, now on CRAN! 🚀
It parses your code and adds the necessary tags automatically, at the function or package level.
Less typing, more coding! 🔥
github.com/DanChaltiel/...
Can't wait to test this one!
I'm excited to share side::kick(), an experimental open-source coding agent for RStudio built entirely in R. It can interact with your files, communicate with your active #rstats session, and run code.
Check it out: github.com/simonpcouch/...
Check it out: github.com/simonpcouch/...
November 6, 2025 at 2:38 PM
Can't wait to test this one!
Reposted by Dan Chaltiel
Still fascinated with #webR and its potential for teaching stats
Here students can play (even from their phones) and find out themselves how the p-value depends on sample size
pakillo.github.io/LM-GLM-GLMM-... #rstats
Here students can play (even from their phones) and find out themselves how the p-value depends on sample size
pakillo.github.io/LM-GLM-GLMM-... #rstats
October 22, 2025 at 6:36 AM
Still fascinated with #webR and its potential for teaching stats
Here students can play (even from their phones) and find out themselves how the p-value depends on sample size
pakillo.github.io/LM-GLM-GLMM-... #rstats
Here students can play (even from their phones) and find out themselves how the p-value depends on sample size
pakillo.github.io/LM-GLM-GLMM-... #rstats
Salut tout le monde !
On cherche un·e stagiaire M2/ingé pour un projet R.
Pas besoin de formation pointue en stats.
À Gustave Roussy, près de Paris (métro 14). Le/la stagiaire apprendra plein de choses !
oncostat.github.io/internships_...
N'hésitez pas à partager ou à me demander des précisions 😊
On cherche un·e stagiaire M2/ingé pour un projet R.
Pas besoin de formation pointue en stats.
À Gustave Roussy, près de Paris (métro 14). Le/la stagiaire apprendra plein de choses !
oncostat.github.io/internships_...
N'hésitez pas à partager ou à me demander des précisions 😊
oncostat.github.io
October 21, 2025 at 2:47 PM
Salut tout le monde !
On cherche un·e stagiaire M2/ingé pour un projet R.
Pas besoin de formation pointue en stats.
À Gustave Roussy, près de Paris (métro 14). Le/la stagiaire apprendra plein de choses !
oncostat.github.io/internships_...
N'hésitez pas à partager ou à me demander des précisions 😊
On cherche un·e stagiaire M2/ingé pour un projet R.
Pas besoin de formation pointue en stats.
À Gustave Roussy, près de Paris (métro 14). Le/la stagiaire apprendra plein de choses !
oncostat.github.io/internships_...
N'hésitez pas à partager ou à me demander des précisions 😊
Reposted by Dan Chaltiel
Wondering if you can outsource your data viz work to ChatGPT? 📊
I tested out a few different generative AI tools, giving them prompts to visualise two different data sets. If you're interested in the results, you can read them here: nrennie.rbind.io/blog/gen-ai-...
#RStats #Python #DataViz #GenAI
I tested out a few different generative AI tools, giving them prompts to visualise two different data sets. If you're interested in the results, you can read them here: nrennie.rbind.io/blog/gen-ai-...
#RStats #Python #DataViz #GenAI
Generative AI for Data Visualisation – Nicola Rennie
Can generative AI create good data visualisations? This blog post compares the performance of ChatGPT, Claude, Copilot, and Gemini when presented with a generic request to visualise a dataset.
nrennie.rbind.io
October 9, 2025 at 9:57 AM
Wondering if you can outsource your data viz work to ChatGPT? 📊
I tested out a few different generative AI tools, giving them prompts to visualise two different data sets. If you're interested in the results, you can read them here: nrennie.rbind.io/blog/gen-ai-...
#RStats #Python #DataViz #GenAI
I tested out a few different generative AI tools, giving them prompts to visualise two different data sets. If you're interested in the results, you can read them here: nrennie.rbind.io/blog/gen-ai-...
#RStats #Python #DataViz #GenAI
Reposted by Dan Chaltiel
When I see a report filled with p-values and no effect sizes, I worry. When I see model metrics and no baseline comparison, I worry. Statistics is more than math. It’s the discipline of contextual honesty.
#DataScience #MachineLearning #AI #RStats
#DataScience #MachineLearning #AI #RStats
October 1, 2025 at 5:30 PM
When I see a report filled with p-values and no effect sizes, I worry. When I see model metrics and no baseline comparison, I worry. Statistics is more than math. It’s the discipline of contextual honesty.
#DataScience #MachineLearning #AI #RStats
#DataScience #MachineLearning #AI #RStats
Reposted by Dan Chaltiel
If doughnuts are coming back into fashion, let me bring this one back. #rstats #ShowYourStripes #ShowYourTorus
September 30, 2025 at 11:07 AM
If doughnuts are coming back into fashion, let me bring this one back. #rstats #ShowYourStripes #ShowYourTorus
Reposted by Dan Chaltiel
Really insightful post from Julie Tibshirani (spotted in LinkedIn, can't find on Bsky) reflecting on #rstats 's unique governance structure and what can be learned for other languages
jtibs.substack.com/p/if-all-the...
jtibs.substack.com/p/if-all-the...
If all the world were a monorepo
The R ecosystem and the case for extreme empathy in software maintenance
jtibs.substack.com
September 14, 2025 at 11:29 PM
Really insightful post from Julie Tibshirani (spotted in LinkedIn, can't find on Bsky) reflecting on #rstats 's unique governance structure and what can be learned for other languages
jtibs.substack.com/p/if-all-the...
jtibs.substack.com/p/if-all-the...
Reposted by Dan Chaltiel
By request: Same #rshiny app → native #electron desktop app workflow now on #Windows11
shinyelectron::export() → #rshinylive → installer → app.exe
[Worth the Parallels license to record this from my Mac]
Still no #rstats dependencies for end users. Living the cross-platform life (virtually).
shinyelectron::export() → #rshinylive → installer → app.exe
[Worth the Parallels license to record this from my Mac]
Still no #rstats dependencies for end users. Living the cross-platform life (virtually).
September 7, 2025 at 5:57 AM
By request: Same #rshiny app → native #electron desktop app workflow now on #Windows11
shinyelectron::export() → #rshinylive → installer → app.exe
[Worth the Parallels license to record this from my Mac]
Still no #rstats dependencies for end users. Living the cross-platform life (virtually).
shinyelectron::export() → #rshinylive → installer → app.exe
[Worth the Parallels license to record this from my Mac]
Still no #rstats dependencies for end users. Living the cross-platform life (virtually).
Reposted by Dan Chaltiel
At the risk of stretching the imagination beyond the limits of human endurance, the reader is asked to pretend that the author is interested in splines #rstats
Splines, B-splines, P-splines, and a disapproving kitten – Notes from a data witch
No, I do not care about splines. But I am trying to learn about GAMLSS regression, and yes, it is to this dark place that this topic has taken me
blog.djnavarro.net
September 8, 2025 at 1:41 AM
At the risk of stretching the imagination beyond the limits of human endurance, the reader is asked to pretend that the author is interested in splines #rstats
💡 Tips wanted! #RStats
You're working on a package 📦 and improving a function. What's your development workflow?
I usually put a minimal example in a helper file, so every time I run `devtools::load_all()` it loads my changes and shows their effect.
But I wonder if there's a cleaner way to do it...
You're working on a package 📦 and improving a function. What's your development workflow?
I usually put a minimal example in a helper file, so every time I run `devtools::load_all()` it loads my changes and shows their effect.
But I wonder if there's a cleaner way to do it...
July 31, 2025 at 6:22 AM
💡 Tips wanted! #RStats
You're working on a package 📦 and improving a function. What's your development workflow?
I usually put a minimal example in a helper file, so every time I run `devtools::load_all()` it loads my changes and shows their effect.
But I wonder if there's a cleaner way to do it...
You're working on a package 📦 and improving a function. What's your development workflow?
I usually put a minimal example in a helper file, so every time I run `devtools::load_all()` it loads my changes and shows their effect.
But I wonder if there's a cleaner way to do it...
Hey #Rstats!
Just discovered `testthat::describe()`, it seems so much cleaner and more structured than `testthat::test_that()` for organizing tests🤩
But… why isn’t it more common? Even tidyverse packages barely use it. Am I missing something?
Just discovered `testthat::describe()`, it seems so much cleaner and more structured than `testthat::test_that()` for organizing tests🤩
But… why isn’t it more common? Even tidyverse packages barely use it. Am I missing something?
July 6, 2025 at 7:57 AM
Hey #Rstats!
Just discovered `testthat::describe()`, it seems so much cleaner and more structured than `testthat::test_that()` for organizing tests🤩
But… why isn’t it more common? Even tidyverse packages barely use it. Am I missing something?
Just discovered `testthat::describe()`, it seems so much cleaner and more structured than `testthat::test_that()` for organizing tests🤩
But… why isn’t it more common? Even tidyverse packages barely use it. Am I missing something?
Reposted by Dan Chaltiel
#RShiny devs, don't miss this post by Mike Page about an useful and simple tool to draft your apps!
"Introducing shinydraw: a no-code tool for shiny wireframing"
cynkra.com/blog/2025-05...
#RStats
"Introducing shinydraw: a no-code tool for shiny wireframing"
cynkra.com/blog/2025-05...
#RStats
Introducing shinydraw: a no-code tool for shiny wireframing - cynkra
Streamline your Shiny app design: Introducing shinydraw for effortless wireframing
cynkra.com
May 13, 2025 at 7:12 AM
#RShiny devs, don't miss this post by Mike Page about an useful and simple tool to draft your apps!
"Introducing shinydraw: a no-code tool for shiny wireframing"
cynkra.com/blog/2025-05...
#RStats
"Introducing shinydraw: a no-code tool for shiny wireframing"
cynkra.com/blog/2025-05...
#RStats
Reposted by Dan Chaltiel
New unhinged #rstats rant about NSE just dropped:
🔗 kbodwin.github.io/paRticles/po...
tl;dr - some cute (?) tricks for iterating over unquoted columns
see below to skip the stream-of-consiousness blog and go straight to code snippets
🔗 kbodwin.github.io/paRticles/po...
tl;dr - some cute (?) tricks for iterating over unquoted columns
see below to skip the stream-of-consiousness blog and go straight to code snippets
Punctuation and Other Problems – paRticles
kbodwin.github.io
April 25, 2025 at 6:30 AM
New unhinged #rstats rant about NSE just dropped:
🔗 kbodwin.github.io/paRticles/po...
tl;dr - some cute (?) tricks for iterating over unquoted columns
see below to skip the stream-of-consiousness blog and go straight to code snippets
🔗 kbodwin.github.io/paRticles/po...
tl;dr - some cute (?) tricks for iterating over unquoted columns
see below to skip the stream-of-consiousness blog and go straight to code snippets
Reposted by Dan Chaltiel
New visualization tool alert!
The vayr package version 1.0.0 is now on CRAN.
It contains position adjustments for ggplot2 that help with overplotting in pleasing ways. My favorite is position_sunflower().
- install.packages("vayr")
- alexandercoppock.com/vayr
#rstats #ggplot2 #dataviz
The vayr package version 1.0.0 is now on CRAN.
It contains position adjustments for ggplot2 that help with overplotting in pleasing ways. My favorite is position_sunflower().
- install.packages("vayr")
- alexandercoppock.com/vayr
#rstats #ggplot2 #dataviz
April 16, 2025 at 7:53 PM
New visualization tool alert!
The vayr package version 1.0.0 is now on CRAN.
It contains position adjustments for ggplot2 that help with overplotting in pleasing ways. My favorite is position_sunflower().
- install.packages("vayr")
- alexandercoppock.com/vayr
#rstats #ggplot2 #dataviz
The vayr package version 1.0.0 is now on CRAN.
It contains position adjustments for ggplot2 that help with overplotting in pleasing ways. My favorite is position_sunflower().
- install.packages("vayr")
- alexandercoppock.com/vayr
#rstats #ggplot2 #dataviz
Hey #rstats, time for a poll!
What's your go-to name for a folder that stores your saved plots?
I use "plots", "graphs", "figures", … and I crave convergence 😩
What's your go-to name for a folder that stores your saved plots?
I use "plots", "graphs", "figures", … and I crave convergence 😩
April 9, 2025 at 12:59 PM
Hey #rstats, time for a poll!
What's your go-to name for a folder that stores your saved plots?
I use "plots", "graphs", "figures", … and I crave convergence 😩
What's your go-to name for a folder that stores your saved plots?
I use "plots", "graphs", "figures", … and I crave convergence 😩
Reposted by Dan Chaltiel
When you say something is an assumption (e.g., linear regression assumes conditional normality) you need to specify what properties are actually being preserved with this assumption. 1/3
March 10, 2025 at 4:09 PM
When you say something is an assumption (e.g., linear regression assumes conditional normality) you need to specify what properties are actually being preserved with this assumption. 1/3
Reposted by Dan Chaltiel
Decades from now, the Covid-19 pandemic will be visible in the historical data of nearly anything measurable today. Here’s an incomplete collection of charts that capture that break — across the economy, health care, education, work, family life and more.
30 Charts That Show How Everything Changed in March 2020
It can be easy to forget, or look away from, the pain and disruption of the pandemic. The numbers will be there to remind us.
www.nytimes.com
March 10, 2025 at 7:24 AM
Decades from now, the Covid-19 pandemic will be visible in the historical data of nearly anything measurable today. Here’s an incomplete collection of charts that capture that break — across the economy, health care, education, work, family life and more.
Reposted by Dan Chaltiel
Collider bias is the trickiest one of these—I use this example too:
If the true relationship between niceness & appearance is zero but you only look at people you've dated (i.e. adjusted for that collider) you're missing a whole quadrant—the result is wrong and only valid for part of the population
If the true relationship between niceness & appearance is zero but you only look at people you've dated (i.e. adjusted for that collider) you're missing a whole quadrant—the result is wrong and only valid for part of the population
February 20, 2025 at 10:40 PM
Collider bias is the trickiest one of these—I use this example too:
If the true relationship between niceness & appearance is zero but you only look at people you've dated (i.e. adjusted for that collider) you're missing a whole quadrant—the result is wrong and only valid for part of the population
If the true relationship between niceness & appearance is zero but you only look at people you've dated (i.e. adjusted for that collider) you're missing a whole quadrant—the result is wrong and only valid for part of the population
Reposted by Dan Chaltiel
#RStats francophones, les prochaines Rencontres R Les auront lieu du 19 mai au 21 mai à l'Université de Mons (UMONS): soumettez une communication aujourd'hui! rr2025.sciencesconf.org/resource/pag...
11ème Rencontres R - Sciencesconf.org
rr2025.sciencesconf.org
February 14, 2025 at 2:29 PM
#RStats francophones, les prochaines Rencontres R Les auront lieu du 19 mai au 21 mai à l'Université de Mons (UMONS): soumettez une communication aujourd'hui! rr2025.sciencesconf.org/resource/pag...
Reposted by Dan Chaltiel
Extension de la deadline des soumissions aux Rencontres R 2025 :
rr2025.sciencesconf.org
Alors, si vous avez un #package R, si vous avez une #méthode #stat codée en R ou juste si vous appliquez les #programmes de R, il est encore temps de soumettre. L'abstract ne fait que deux pages en plus.
rr2025.sciencesconf.org
Alors, si vous avez un #package R, si vous avez une #méthode #stat codée en R ou juste si vous appliquez les #programmes de R, il est encore temps de soumettre. L'abstract ne fait que deux pages en plus.
11ème Rencontres R - Sciencesconf.org
rr2025.sciencesconf.org
February 17, 2025 at 1:49 PM
Extension de la deadline des soumissions aux Rencontres R 2025 :
rr2025.sciencesconf.org
Alors, si vous avez un #package R, si vous avez une #méthode #stat codée en R ou juste si vous appliquez les #programmes de R, il est encore temps de soumettre. L'abstract ne fait que deux pages en plus.
rr2025.sciencesconf.org
Alors, si vous avez un #package R, si vous avez une #méthode #stat codée en R ou juste si vous appliquez les #programmes de R, il est encore temps de soumettre. L'abstract ne fait que deux pages en plus.
Reposted by Dan Chaltiel
New R-hub blog post!
"Lazy introduction to laziness in #RStats"
by @frick.ws, @drmowinckels.io &me
Read about lazy as in...
🦥 lazy evaluation
🦥 lazy database operation
🦥 LazyData
🦥 frugal file modifications
🦥 {lazytest}
🦥 quantifiers in regular expressions
blog.r-hub.io/2025/02/13/l...
"Lazy introduction to laziness in #RStats"
by @frick.ws, @drmowinckels.io &me
Read about lazy as in...
🦥 lazy evaluation
🦥 lazy database operation
🦥 LazyData
🦥 frugal file modifications
🦥 {lazytest}
🦥 quantifiers in regular expressions
blog.r-hub.io/2025/02/13/l...
Lazy introduction to laziness in R - R-hub blog
In the programming world, laziness can often be a good thing: it is both a human quality that can motivate automation efforts, and a programming concept that avoids wasting resources such as memory. N...
blog.r-hub.io
February 13, 2025 at 9:08 AM
New R-hub blog post!
"Lazy introduction to laziness in #RStats"
by @frick.ws, @drmowinckels.io &me
Read about lazy as in...
🦥 lazy evaluation
🦥 lazy database operation
🦥 LazyData
🦥 frugal file modifications
🦥 {lazytest}
🦥 quantifiers in regular expressions
blog.r-hub.io/2025/02/13/l...
"Lazy introduction to laziness in #RStats"
by @frick.ws, @drmowinckels.io &me
Read about lazy as in...
🦥 lazy evaluation
🦥 lazy database operation
🦥 LazyData
🦥 frugal file modifications
🦥 {lazytest}
🦥 quantifiers in regular expressions
blog.r-hub.io/2025/02/13/l...