Postdoc, Princeton DDSS. PhD '25 Government @harvard.edu. Studies redistricting with #rstats. https://christophertkenny.com/https://bsky.app/profile/chriskenny.bsky.socialhttps://bsky.app/profile/chriskenny.bsky.social/post/3mkneozm6ek27Given the Callais decision, resharing our (w @corymccartan.com) "Individual and Differential Harm in Redistricting" piece which tries to tackle estimating group harm, including separating partisan and racial effects of maps... https://osf.io/preprints/socarxiv/nc2x7_v2 (conditionally accepted at Nature Human Behavior)29 Apr 2026 15:04 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mkneozm6ek27https://bsky.app/profile/chriskenny.bsky.social/post/3mjzy3y6ik227The Positron release from last week is *substantially* faster than the March version on startup. Highly recommend updating!21 Apr 2026 21:58 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mjzy3y6ik227https://bsky.app/profile/chriskenny.bsky.social/post/3mjae6kit2k2dI agree, Claude. It is weird that case_match() was deprecated in dplyr 1.2.0.11 Apr 2026 17:25 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mjae6kit2k2dhttps://bsky.app/profile/chriskenny.bsky.social/post/3miz2skmqa22xA proof-of-concept: CI for Quarto extensions! Automatically install and run your templates weekly, so you know when #quartopub updates might break something. Renders results to a Quarto site, so you can preview outputs: https://christophertkenny.com/template-gallery/ Source: https://github.com/christopherkenny/template-gallery08 Apr 2026 19:49 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3miz2skmqa22xhttps://bsky.app/profile/chriskenny.bsky.social/post/3mipab4ob722k"It'll be a quick PR to fix a small feature gap" ... "might as well do it correctly" ...04 Apr 2026 22:00 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mipab4ob722khttps://bsky.app/profile/chriskenny.bsky.social/post/3mi2dufr4uc2uUpdated Positron + Quarto + Quarto VSCode extension at the same time and the preview doesn't work anymore because it appends --output-directory, which is invalid in most cases... Codex followed the ctrl+shift+k -> found the issue -> fixed the extension's typescript so it works! Pretty impressive27 Mar 2026 14:38 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mi2dufr4uc2uhttps://bsky.app/profile/chriskenny.bsky.social/post/3mhqihmepk22wAnd very interesting to see the growth of the tidyverse, Rcpp, and ropensci in the last decade by maintainer/author Hard to think of #rstats without the tidyverse Note: Author parsing is a little difficult and there may be some undercounts! Lines end at last new package author/maintainer role. [contains quote post or other embedded content]23 Mar 2026 16:34 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mhqihmepk22whttps://bsky.app/profile/chriskenny.bsky.social/post/3mhq7f7dr222iCRAN is on track for an all time year in terms of #rstats package submissions:23 Mar 2026 13:51 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mhq7f7dr222ihttps://bsky.app/profile/chriskenny.bsky.social/post/3mhij4lztr22jDoing a lot of testing of AI agents with my team these days. Pulled together a new package, wf, which helps install and manage agent skills from within #rstats (A great time to be at Princeton DDSS; our team has an intro to Claude workshop today and an intro to Posit Assistant workshop next week!) [contains quote post or other embedded content]20 Mar 2026 12:24 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mhij4lztr22jhttps://bsky.app/profile/chriskenny.bsky.social/post/3mhb2azakdc26Doing some testing with codex in #rstats. It seems quite a bit behind Claude Code... Does anyone know if there is a clean way to give codex access to `.libPaths()` (ie, C:/Users/chris/AppData/Local/R/win-library/4.5 AND C:/Program Files/R/R-4.5.2/library) without giving it full powershell access?17 Mar 2026 13:10 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mhb2azakdc26https://bsky.app/profile/chriskenny.bsky.social/post/3mgktb3f5j226Here's a quick guide to setting up an R LSP for Claude Code in #rstats: https://christophertkenny.com/posts/2026-03-08-r-lsp-claude/ Note that it uses the `languageserver` package at the moment, since I don't believe ark is exposed for a standalone mode yet.08 Mar 2026 17:06 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mgktb3f5j226https://bsky.app/profile/chriskenny.bsky.social/post/3mgbbsvz4yc27Over the weekend, I started collecting/organizing a list of cool #rstats skills for LLMs at https://github.com/christopherkenny/awesome-rstats-skills. Please open an issue or PR in any awesome additions you see! Includes a section for helpful posts like @ivelasq3.bsky.social's⬇️ [contains quote post or other embedded content]04 Mar 2026 22:00 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mgbbsvz4yc27https://bsky.app/profile/chriskenny.bsky.social/post/3mgaghztptk2fOne weird pattern from playing with Claude Code and GitHub Copilot CLI: Claude Code loves to use bash and python, even when working on R code (and then gets confused since there is no 🐍installed) Copilot, with the same models, seems to naturally know to use R and powershell04 Mar 2026 13:50 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mgaghztptk2fhttps://bsky.app/profile/chriskenny.bsky.social/post/3mfoul752lc2jRedistricting Reforms Reduce Gerrymandering by Constraining Partisan Actors is now forthcoming in the APSR! We use a game theoretic treatment and continuous DiD(iD) to show when redistricting reforms work with @corymccartan.com, @simko.bsky.social, Emma Ebowe, Michael Zhao, and Kosuke Imai25 Feb 2026 14:15 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mfoul752lc2jhttps://bsky.app/profile/chriskenny.bsky.social/post/3mbtmydblzk23My 2025 #rstats wrapped in honor of CRAN reopening for 2026: https://christophertkenny.com/posts/2026-01-07-software-2025/ Fun fact: I made 43 CRAN uploads in 2025 and 41 of them were successful!07 Jan 2026 14:02 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3mbtmydblzk23https://bsky.app/profile/chriskenny.bsky.social/post/3m7q3brkhqs23Throwback to my favorite #rstats Ripley crashout where he removed a package because a maintainer called him Brian [contains quote post or other embedded content]11 Dec 2025 17:16 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m7q3brkhqs23https://bsky.app/profile/chriskenny.bsky.social/post/3m7pxk3umzk2tNothing like starting the day responding to a Brian Ripley hissy fit... He removes an #rstats package before the scheduled date, gets a bounceback from a *downstream* package, and archives all of the packages... CRAN volunteers time is the most valuable resource, yet Ripley just loves wasting it11 Dec 2025 16:09 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m7pxk3umzk2thttps://bsky.app/profile/chriskenny.bsky.social/post/3m7neog7jks27Glad we have LLMs in everything so that GitHub tries to create commit messages like this... Just makes more work by having to delete the message to write in a correct one instead of just writing the correct one in the first place10 Dec 2025 15:26 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m7neog7jks27https://bsky.app/profile/chriskenny.bsky.social/post/3m5wtt2xcwc2i@corymccartan.com and I have been playing with @paleolimbot.bsky.social's #rstats `libgeos` package. It's pretty awesome. Handles the hard parts so that you can connect Rcpp to GEOS with a few lines of code. Got some existing, optimized `geos` code to ~3x faster! paleolimbot.github.io/libgeos/ https://paleolimbot.github.io/libgeos/18 Nov 2025 23:01 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m5wtt2xcwc2ihttps://bsky.app/profile/chriskenny.bsky.social/post/3m52ainfbkc24NYC 2025 Mayoral results as a dot density plot using the `dots` #rstats package (https://cran.r-project.org/web/packages/dots/index.html)07 Nov 2025 14:01 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m52ainfbkc24https://bsky.app/profile/chriskenny.bsky.social/post/3m4wj4bbsek2rSupport for Prop 50 in California is highly correlated with support for Harris in 2024 and even runs slightly ahead of her A sad day for democracy to have the future of competitive elections literally on the ballot and yet be so utterly defeated. Stands at 63.9% voting yes.06 Nov 2025 02:24 +0000at://did:plc:wpe35pganb6d4pg4ekmfy6u5/app.bsky.feed.post/3m4wj4bbsek2r