Super excited for the new release of #rstats V8 which now also works in WebR by running js/wasm natively in web worker (thanks to @gws.phd). Will release some cool new packages soon to show the potential of WASM in R ✨
PSA for anyone beginning to use #wasm #webR to share R code snippets: We have a new short URL for the webR app: webr.sh!
That’s correct, unfortunately. It’s a fundamental limitation of running the Shiny server under Wasm in the user’s browser. Everything is visible in the browser dev tools.
The webR changes haven’t filtered down into Shinylive yet. Once we cut a new release, and Shinylive is updated, we’re hoping curl and friends should work well!
Even ellmer works! Here using a provider that does not require auth: webr.r-wasm.org/latest/#code...
Of course, the usual rules about API keys in webR still apply: *ALL* R source is visible client-side, so *NEVER* publish anything that actually includes any secret keys. This is just a neat demo!
You can read more about how this all works in Jeroen's blog post: jeroen.github.io/notes/webass...
Here's an example using an R package that relies on {httr2} to query a Hacker News API: webr.r-wasm.org/latest/#code...
Thanks to some joint work with @jeroenooms.bsky.social the latest dev build of webR now supports the {curl} package, along with many other packages that rely on it! 🎉 If you're able to use a WebSocket SOCKS proxy (outside of the browser), you can now use {curl} to make HTTP requests in webR.
Making libcurl work in webassembly
https://jeroen.github.io/notes/webassembly-curl/
We're happy to announce that there will be another #rstats Tidy Development Day after the 2025 posit::conf in Atlanta!
www.tidyverse.org/blog/2025/07...
webR 0.5.4 has been released! Some new updates include sharing URLs for the webR app, filesystem support for JupyterLite 0.6, and an upgrade to the Emscripten runtime. Read all about it in my latest post on the tidyverse blog: www.tidyverse.org/blog/2025/07...
🚀Quarto Live developer @gws.phd shows how to make interactive, explorable, & reproducible docs. #Python & R in the browser—no setup, no servers!
✅ Live coding exercises & auto-checking
✅ Works on mobile!
📺 Watch now → buff.ly/41BnAsT
#Quarto #DataScience #WebAssembly
As far as I’m concerned, #webr and #shinylive is indistinguishable from magic.
I can’t believe that since first installing #quarto-webr a few hours ago till now, I’ve gotten a relatively complicated #shinyapp exported, deployed, and running serverless.
This is magic. #rstats
I have now also ported the color vision deficiency simulation app to Shiny live. Advantage is this runs entirely in your browser, even though you "upload" the image it never leaves your computer.
A screenshot of a Pyodide REPL executing Polars code: import polars as pl import requests r = requests.get("https://raw.githubusercontent.com/pola-rs/polars/refs/heads/main/examples/datasets/foods2.csv") pl.read_csv(r.content).group_by("category").mean()
A screenshot of a Quarto Live code cell executing Polars code: import polars as pl import requests r = requests.get("https://raw.githubusercontent.com/pola-rs/polars/refs/heads/main/examples/datasets/foods2.csv") pl.read_csv(r.content).group_by("category").mean()
![A screenshot of a Shinylive app using Polars code:
from shiny import App, render, ui
import polars as pl
from pathlib import Path
app_ui = ui.page_fluid(
ui.input_select("cyl", "Select Cylinders", choices=["4", "6", "8"]),
ui.output_data_frame("filtered_data")
)
def server(input, output, session):
df = pl.read_csv(Path(__file__).parent / "mtcars.csv")
@output
@render.data_frame
def filtered_data():
return (df
.filter(pl.col("cyl") == int(input.cyl()))
.select(["mpg", "cyl", "hp"]))
app = App(app_ui, server)](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:hnkswprmt42fkt2huzbkcpcx/bafkreifcr4vfugeei25pfex52gvvvxnukyy4sms4ytpk6isepn5c3j473i@jpeg)
A screenshot of a Shinylive app using Polars code: from shiny import App, render, ui import polars as pl from pathlib import Path app_ui = ui.page_fluid( ui.input_select("cyl", "Select Cylinders", choices=["4", "6", "8"]), ui.output_data_frame("filtered_data") ) def server(input, output, session): df = pl.read_csv(Path(__file__).parent / "mtcars.csv") @output @render.data_frame def filtered_data(): return (df .filter(pl.col("cyl") == int(input.cyl())) .select(["mpg", "cyl", "hp"])) app = App(app_ui, server)
Recently I've been working on getting #polars running in #pyodide. This was a fun one, even requiring patches to LLVM's #wasm writer! Everything has now been upstreamed and earlier this week Pyodide v0.27.0 released, including a Wasm build of Polars usable in Pyodide, Shinylive and Quarto Live 🎉
Ooooooh this looks super fun!
📦 usethis 3.1.0 📦 is released. `use_vignette()` and `use_article()` can now help you initiate a Quarto (.qmd) vignette or article. #rstats
usethis.r-lib.org/news/index.h...
#RStats I'm so happy to finally share what we've been experimenting on at ThinkR for the past couple of weeks — A native mobile app that can run R code through #webR
Read more at 👉 rtask.thinkr.fr/youve-been-w...
Slides on how R-universe uses @cloudflare.social to get fast global routing and caching: jeroen.github.io/technotes2024
We’ve been working hard on next quarto version and it is coming out soon. It is already available so if you are ok to try it please do ! Feedback welcome to find the remaining bugs that could still be hidden. Thanks !
I made a starter pack with #Shiny for #RStats and #Python devs and friends! And if you're a Shiny person and want to be included, let me know.
go.bsky.app/BFEQ1HY
{rayshader} one day! Maybe we could it hook up with webGL/webGPU 🤔
I've written a series of blog posts about what I've been up to over the last few months! 📝
In the posts I talk about webR, R Shinylive, and a new Quarto extension for interactive code exercises.
Take a look if you're interested in the latest for R for WebAssembly.
www.tidyverse.org/blog/2024/10...
posit conf 2024 talk recordings and workshop materials
No trick, all treats - posit::conf(2024) talks are now on YouTube! 🍬
Over a thousand people gathered in Seattle and online to dive into all things open-source data science. With 100+ talks, there's a lot to explore!
Check out the playlist: www.youtube.com/playlist?lis...
#RStats #Python
R in Production, r-in-production.org, is a new book that will help you put R into production, coupled with (in the near future) new tools to make the process less painful. I'm working on this with @thomasp85.com , @gaborcsardi.bsky.social, and @hfrick.bsky.social.
Screenshot of the next generation of data science education website talk.
🎓 Excited to speak at @pyopensci.bsky.social 's Fall Festival! Join me for insights on the future of #DataScience education using #WebAssembly tools like #Pyodide & #webR with #Quarto.
📅 Nov 1st, Workshop: "Reproducible reports and presentations"
🧵 Thread below!
‼️ New blog post! I discuss the benefits of developing C/C++ code for R with the new #Positron IDE (from @posit.co) and provide functions to add to your user profile to automate some current pain points away!
Developing C/C++ code for R with Positron
Link: www.tylermw.com/posts/coding...
#RStats
Winners of the 2024 Shiny Contest
posit.co/blog/winners...
#posit #rstats #shiny #python #pydata
I made an #RSats starter pack. Includes a touch of Linux, Python, and dataviz but mostly R. go.bsky.app/Ki7PjpS
A screenshot of a demo app consisting of a box on the left and a histogram on the right. The digit 4 has been hand-written into the box on the left (e.g. with a mouse or touchscreen). The histogram shows a probability distribution over the digits 0-9, attempting to classify which digit has been drawn. In this case, the bar for the digit "4" is the highest.
I recently wrote a deep-dive post discussing the patches we make to LLVM Flang to cross-compile #wasm objects from Fortran source for #webR. It's at gws.phd/posts/fortra..., do take a look if you're interested. There are also some fun little interactive BLAS & LAPACK demos near the end of the post.
