George Stagg
@gws.phd
Software Engineer @ Posit working on webR & WebAssembly. Maths. Physics. I like making things.
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 🎉
![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)
January 4, 2025 at 11:59 AM
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.
March 14, 2024 at 12:14 PM
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.