Jason J. Mercer | Lightnews

Jason Mercer

@wetlandscapes.bsky.social

250 followers 400 following 79 posts

Wetlands and waters from the montane to marine, data science, reproducibility, isotopes, and climate change. Personal account; opinions my own.

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Environmental science 58%

Agriculture 17%

Posts Replies Media Videos

Jason Mercer @wetlandscapes.bsky.social · 3d

This has me cackling. Thank you @hadley.nz

Hadley Wickham @hadley.nz · 4d

Do you teach #rstats? Do your students complain about how lame and old-fashioned dplyr is? Don't worry: I have the solution for you: github.com/hadley/genzp....

genzplyr is dplyr, but bussin fr fr no cap.

GitHub - hadley/genzplyr: dplyr but make it bussin fr fr no cap

dplyr but make it bussin fr fr no cap. Contribute to hadley/genzplyr development by creating an account on GitHub.

github.com

Reposted by Billur Bektaş, Jason J. Mercer

Davis Vaughan @davisvaughan.bsky.social · 3d

We are looking for #rstats community feedback on 3 new dplyr functions!

We're aiming to expand the `filter()` family:

- `filter()` to keep rows
- `filter_out()` to drop rows
- `when_any()` and `when_all()` as modifiers

Read more and leave feedback here:
github.com/tidyverse/ti...

Example of using `filter_out()` on the `penguins` dataset, showing how it is much easier than `filter()`, especially with `NA`s

Reposted by Simon Roux, Jacob Montgomery, Jesse D. Berman , and 3 more Simon Roux, Jacob Montgomery, Jesse D. Berman, Masatoshi Katabuchi, Connor Morozumi, Jason J. Mercer

Hadley Wickham @hadley.nz · 4d

GitHub - hadley/genzplyr: dplyr but make it bussin fr fr no cap

dplyr but make it bussin fr fr no cap. Contribute to hadley/genzplyr development by creating an account on GitHub.

github.com

Jason Mercer @wetlandscapes.bsky.social · 14d

What about great_tables, which is the python version of gt: posit-dev.github.io/great-tables.... Full disclosure, never used tinytables, so I may be off base

intro – great_tables

posit-dev.github.io

Jason Mercer @wetlandscapes.bsky.social · 17d

Since you mentioned conda, curious about your opinions on pixi

Jason Mercer @wetlandscapes.bsky.social · Oct 3

I think that's all three in a single axiom

Reposted by Jason J. Mercer

Posit @posit.co · Oct 1

Looking to use Quarto inside Positron, our new IDE for data science? We’ve released a video and guide for getting started.

Positron makes Quarto easy: Quarto is pre-installed, you get dedicated buttons for tasks like "Preview," and full coding support.

Learn more: posit.co/blog/create-...

Jason Mercer @wetlandscapes.bsky.social · Oct 1

Are you?

Jason Mercer @wetlandscapes.bsky.social · Sep 30

Cline+OpenRouter in Positron is amazing

Reposted by Jason J. Mercer

Achim Zeileis @zeileis.org · Sep 26

📢 PSA: The R-Forge server is under attack from hackers and hence web access (e.g., for package installation) is currently down. #rstats

The team at WU Wien is working on it. I'll report here when it is back up again.

Jason Mercer @wetlandscapes.bsky.social · Sep 25

Git pull/merge requests intimidate me. What really helped you understand them? And how do you usually do them in a way that helps the person making the request get good feedback while also ensuring the code is in good shape (outside of tests -- code isn't at that stage, yet)? Web? Local?

Reposted by Wolfgang Huber, Jason J. Mercer

Andrew Heiss @andrew.heiss.phd · Aug 25

New #QuartoPub extension! Quarto output styling adds CSS rules for computational output, warnings, and messages for #rstats, #python, #julialang, and #observablejs - use the default styles, minimal styles, or add your own custom CSS andrewheiss.github.io/quarto-outpu...

Output, errors, warnings, and messages in R, but they're all formatted the same

Output, errors, warnings, and messages in R with a thin border around the output, and errors filled with red, warnings filled with yellow, and messages filled with blue

Warnings and messages highlighted with actual R code showing a ggplot plot of penguin data

Output, errors, warnings, and messages in R with a thin border around the output, and errors bordered with red, warnings bordered with yellow, and messages bordered with blue

Jason Mercer @wetlandscapes.bsky.social · Aug 7

Where are the communities focused on data science, engineering, analytics, etc in the public utilities sector? Especially water. Trying to find my nerds

Jason Mercer @wetlandscapes.bsky.social · Jul 26

You should. You should make a package for that

Jason Mercer @wetlandscapes.bsky.social · Jul 26

Say you have some observations and a black box model (e.g., compiled and you can't change anything about it). You can programmatically manipulate the model parameters and compare results to observations. That's it. What tool do you use to tune the parameters? Bonus for any #bayesian tools

Jason Mercer @wetlandscapes.bsky.social · Jul 18

Given a focus on scientific computing I prefer #julialang for speed and readability, but I'm Rust curious. Is there a rust equivalent to rcpp for #rstats?

Jason Mercer @wetlandscapes.bsky.social · Jul 18

I'm learning all kinds of new tricks. Thanks for the recs!

Jason Mercer @wetlandscapes.bsky.social · Jul 17

Cool package! It's a little awkward with the roxygen stuff inside the function, but I def get why they did that. Just means a lot of copy paste if/when converting to a package

Jason Mercer @wetlandscapes.bsky.social · Jul 17

Well that's a neat trick. Pretty heavy dependency, but for a dev environment wouldn't really matter

Jason Mercer @wetlandscapes.bsky.social · Jul 17

One thing I really #rstats had was a way to view a help file for a local function just using roxygen2 decorators. I'm lazy, I don't want to build a package

Jason Mercer @wetlandscapes.bsky.social · Jul 9

This is huge. Not entirely sure of the security implications, but would be cool if there was an environment variable, flag, or bash script the rocker project could use to automate a bit of this setup on the image side of things

Jason Mercer @wetlandscapes.bsky.social · Jul 8

Have you set your .vscode/settings.json to format qmd files? posit-dev.github.io/air/editor-v...

VS Code and Positron – Air

posit-dev.github.io

Reposted by Jason J. Mercer

Tom Mock @themockup.blog · Jul 8

Thanks for trying it out!

Check out this button in the plot pane for opening in editor or new window and the "colorize" extension for coloring hex codes and other colors:

screenshot of a R script with colorized hex code and the colorize extension highlighted

Reposted by Jason J. Mercer

Andrew Heiss @andrew.heiss.phd · Jul 5

*Another* blog post about @posit.co's Positron! Its Remote Explorer feature lets you connect to other computers via SSH, including locally-running Docker containers, which means you can write and run code in version-locked #rstats environments! www.andrewheiss.com/blog/2025/07...

Positron connected to a not-really-remote remote session inside a Docker container

Reposted by Simon Roux, Wolfgang Huber, Jason J. Mercer

Posit @posit.co · Jul 1

Ever wonder how the #tidyverse came to be? 🤔

#TheTestSet's first episode features @hadley.nz on his accidental empire of #RStats packages, bear encounters, and more!

Stream it at thetestset.co, Spotify, or Apple Podcasts.

#DataAnalytics #PodcastLaunch

Hadley Wickham in a white t-shirt and jeans sits on a light-colored couch across from Michael Chow, wearing a dark green shirt and pants, who is seated on an orange pouf. Between them is a white coffee table with books. In the background, there's a dark bar with shelves displaying numerous bottles, a wood-paneled wall, and a black, modern fireplace. Text overlay reads "Hadley Wickham CHIEF SCIENTIST, POSIT".

Reposted by Ewan Carr, Barrett, Jason J. Mercer

Charlie Gao @shikokuchuo.net · Jun 13

Bleeding edge update for the #tidyverse purrr package with even more seamless #rstats parallel maps.

Introducing our shiniest new adverb: `in_parallel()`. Just wrap your function to take advantage of blazing fast parallel processing via mirai.

pak::pak("tidyverse/purrr")

purrr.tidyverse.org/dev/

Functional Programming Tools

A complete and consistent functional programming toolkit for R.

purrr.tidyverse.org

Jason Mercer @wetlandscapes.bsky.social · Jun 5

Anyone have an example of setting up and using @duckdb.org's ducklake in #rstats, yet? Preferably with dbplyr or duckplyr

Jason Mercer @wetlandscapes.bsky.social · May 29

Positron is getting roxygen skeletons! github.com/posit-dev/po... #rstats

R: implement "Insert Roxygen Skeleton" · Issue #1744 · posit-dev/positron

I have a toy package I'm working with as I work on the testing stuff and I keenly miss "Insert Roxygen Skeleton" from RStudio.

github.com

Jason Mercer @wetlandscapes.bsky.social · Apr 10

What are your favorite ways to model time series? Bonus for models that can accomodate [0, Inf) bounded data and sharp spikes in seasonality, where the onset of the spike varies over time

Reposted by Jason J. Mercer

Evan Frost @wildwoods.bsky.social · Mar 1

Congress has just released a list of federal DOI offices to be closed under the ongoing massacre of our natural resource agencies -- it's extensive and includes many important NPS, BLM, USGS and USFWS facilities across the country. Truly horrific. democrats-naturalresources.house.gov/imo/media/do...

democrats-naturalresources.house.gov

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