Crystal Lewis
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cghlewis.bsky.social
Crystal Lewis
@cghlewis.bsky.social
5.5K followers 1.7K following 1.4K posts
Research Data Management Consultant | cghlewis.com

Co-organizer @r-ladies-stl.bsky.social‬
Co-organizer POWER Data Management Hub | https://osf.io/ap3tk/

Author of DMLSER: https://datamgmtinedresearch.com/
RDM Weekly: https://rdmweekly.substack.com/
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cghlewis.bsky.social
Crystal Lewis @cghlewis.bsky.social · Oct 21
Re-introduction for new followers!
Hello! 👋
I am currently a freelance research data management consultant. I also co-organize R-Ladies St. Louis. I mostly post about data management and #rstats data wrangling tips. I also recently wrote this book.
datamgmtinedresearch.com
Welcome | Data Management in Large-Scale Education Research
This is the in-progress version of Data Management in Large-Scale Education Research.
datamgmtinedresearch.com
Reposted by Crystal Lewis
libbyheeren.bsky.social
new #dplyr filtering function who dis 😍 meet filter_out()!

👍 GO PUT A THUMBS UP ON DAVIS'S TIDYUP THINGY ON GITHUB TO SHARE MY ENTHUSIASMMMM!! #rstats #databs

And, you know, provide your thoughts on this newly-proposed function if you have them 😌
A screenshot of code that uses the dplyr function called filter, which is built to include rows, in order to exclude them instead. The result also filters out rows where values are NA, which isn't helpful usually. It then shows the messy code you'd need to use to not exclude those NAs, and compares it to some very clean code using a newly proposed function called filter_out, which does not exclude NAs. Libby has drawn silly illustrations all over this screenshot, like yucky faces for dropping NAs and a smily face saying, "new filtering function?"
November 7, 2025 at 11:16 PM
Reposted by Crystal Lewis
lauramkoenig.bsky.social
💬 What are your top tips for setting up successful (research) projects, #AcademicSky #AcademicChatter?
📖 Any recommendations for books/ courses/ websites/ etc. on successful project management in academia?
a cartoon of a dog sitting in front of a laptop with a speech bubble saying it 's fine
ALT: a cartoon of a dog sitting in front of a laptop with a speech bubble saying it 's fine
media.tenor.com
November 7, 2025 at 12:30 PM
cghlewis.bsky.social
I was writing some code using #rstats dplyr to check some hand calculated values and then I was like, what am I doing? I'm not lame. I'm using genzplyr! 💅
library(genzplyr) # genzplyr loaded fr fr 💅 # Your data wrangling is about to be bussin no cap library(dplyr) #for across() df # A tibble: 3 × 5 id q1_scored q2_scored q3_scored total_score <dbl> <dbl> <dbl> <dbl> <dbl> 1 200 1 0 1 2 2 201 0 0 0 0 3 202 1 0 0 2 # Check hand calculated "total_score" variable has accurate values - spoiler alert, it does not df |> glow_up(temp_score = rowSums(across(ends_with("_scored")))) |> vibe_check(temp_score, total_score) |> yeet(temp_score != total_score) # A tibble: 1 × 2 temp_score total_score <dbl> <dbl> 1 1 2
November 7, 2025 at 8:15 PM
cghlewis.bsky.social
Stop being a lame-o and replace dplyr with the more slappin genzplyr.
November 7, 2025 at 2:06 AM
cghlewis.bsky.social
Many research teams still collect paper forms and when it comes to entering data from those forms, there are a series of decisions to be made (and documented) to ensure that data is entered accurately and in a secure and standardized way.

More information: datamgmtinedresearch.com/capture#capt...
November 6, 2025 at 1:54 PM
cghlewis.bsky.social
It's that time again.

"We noticed your personal access token (classic) "August 2025" with gist, repo, user, and workflow scopes will expire in 6 days."
a cartoon of a man wearing glasses and a watch
ALT: a cartoon of a man wearing glasses and a watch
media.tenor.com
November 5, 2025 at 9:44 PM
Reposted by Crystal Lewis
chelseaparlett.bsky.social
🪧
A man at a protest holding a sign that reads “add comments to your SQL queries”
November 5, 2025 at 6:31 PM
cghlewis.bsky.social
About 100 new subscribers per month. For some that might not seem like much, but for this little free passion-project newsletter of mine, I think that's pretty awesome. 🌟
rdmweekly.substack.com
November 4, 2025 at 11:53 PM
Reposted by Crystal Lewis
libbyheeren.bsky.social
TOMORROW, I'm hosting what I'm calling Data Science Lab. This debut session will be our fave Positron settings for #rstats & #python 😍

I called it DS Lounge at first, but that doesn't feel right. You'll see "Lounge" when you register at pos.it/dslab, but future sessions will be "Lab" 🧪😎 #databs
November 4, 2025 at 7:06 PM
Reposted by Crystal Lewis
datarescueproject.org
The John D. and Catherine T. MacArthur Foundation has generously awarded us funding to secure our own storage. This critical processing space will be instrumental in ensuring that large datasets can be temporarily stored, curated, and described.

Thank you, MacArthur Foundation, for your support!
Data Rescue Projects receives support from the John D. and Catherine T. MacArthur Foundation to support data rescue efforts
FOR IMMEDIATE RELEASE Since launching in February 2025, the Data Rescue Project has grown substantially. At this point, the DRP has enabled the rescue of more than 1,000 datasets from US Federal…
www.datarescueproject.org
November 4, 2025 at 5:20 PM
Reposted by Crystal Lewis
eivimeycook.bsky.social
@sortee.bsky.social’s code club has made it onto RDM weekly :D

Excellent article by:
@cecibaldoni.bsky.social
@disnatalie.bsky.social
@cdegroot.bsky.social
@saoirsekelleher.eco
cghlewis.bsky.social Crystal Lewis @cghlewis.bsky.social · 6d
Issue 20 of RDM Weekly is out! 📬

- Automate File Management in R With the {fs} Package @jadeynryan.bsky.social
- How to Start Your Own Code Club @sortee.bsky.social
- Guide to Social Science Data Preparation and Archiving @icpsr.bsky.social
and more!
rdmweekly.substack.com/p/rdm-weekly...
RDM Weekly - Issue 020
A weekly roundup of Research Data Management resources.
rdmweekly.substack.com
November 4, 2025 at 2:10 PM
cghlewis.bsky.social
Issue 20 of RDM Weekly is out! 📬

- Automate File Management in R With the {fs} Package @jadeynryan.bsky.social
- How to Start Your Own Code Club @sortee.bsky.social
- Guide to Social Science Data Preparation and Archiving @icpsr.bsky.social
and more!
rdmweekly.substack.com/p/rdm-weekly...
RDM Weekly - Issue 020
A weekly roundup of Research Data Management resources.
rdmweekly.substack.com
November 4, 2025 at 1:53 PM
Reposted by Crystal Lewis
resourcefulsqrl.bsky.social
PSA to just FINISH writing the damn things before tech infrastructure and corporate landscape changes on you*.

* this is about more than one project, unfortunately.
November 3, 2025 at 9:11 PM
Reposted by Crystal Lewis
avehtari.bsky.social
Now I'm also looking for a research software engineer to implement a pile of research results to R packages loo, posterior, bayesplot, projpred, priorsense, brms or/and Python packages ArviZ, Bambi and Kulprit. Apply by email with no specific deadline (see contact info at users.aalto.fi/~ave/)
avehtari.bsky.social Aki Vehtari @avehtari.bsky.social · 12d
I'm now also looking for a postdoc with strong Bayesian background and interest in developing Bayesian cross-validation theory, methods and software. Apply by email with no specific deadline (see contact information at users.aalto.fi/~ave/).

Others, please share
avehtari.bsky.social Aki Vehtari @avehtari.bsky.social · Oct 6
I'm looking for a doctoral student with Bayesian background to work on Bayesian workflow and cross-validation (see my publication list users.aalto.fi/~ave/publica... for my recent work) at Aalto University.

Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
November 3, 2025 at 11:13 AM
Reposted by Crystal Lewis
ramikrispin.bsky.social
The useR! 2025 conference virtual talks are available on YouTube 👇🏼👇🏼👇🏼

www.youtube.com/playlist?lis...

#rstats
useR! 2025 Virtual Talks - YouTube
A playlist containing all the virtual talks from useR! 2025. Please contact us if you see an issue with a video.
www.youtube.com
November 3, 2025 at 1:52 AM
Reposted by Crystal Lewis
cghlewis.bsky.social
Issue 19 of RDM Weekly is out! 🎃

- Handbook for Reproduction and Replication Studies @forrt.bsky.social
- A Crowdsourced Effort to Develop a Lab Manual Template @improvingpsych.org
- So, What’s the Deal with rlang, Anyway? @veerle.hypebright.nl
and more!

rdmweekly.substack.com/p/rdm-weekly...
October 28, 2025 at 1:26 PM
Reposted by Crystal Lewis
kbriney.bsky.social
Best day of the year: getting author copies of my new book, “The Data Management Workbook.” It comes out on December 2 from @pelagic.bsky.social and is already available for pre-order.
October 31, 2025 at 4:38 PM
Reposted by Crystal Lewis
fbabovic.bsky.social
I remembered seeing this and it came in so clutch cleaning up data that had a number of different data versions in it #rstats
cghlewis.bsky.social Crystal Lewis @cghlewis.bsky.social · Aug 20
dplyr::rows_update() and dplyr::rows_patch() continue to be super helpful functions when you want to fill missing data with data collected from another source. #rstats

More examples: cghlewis.github.io/data-wrangli...
library(tidyverse) # Review the original data df # A tibble: 5 x 4 id grade item1 item2 <dbl> <dbl> <dbl> <dbl> 1 22 3 4 5 2 23 3 5 4 3 24 4 2 1 4 25 5 NA NA 5 26 4 NA NA # Review our additional dataset collected from a separate form # Notice that the grade changed for ID 26 (from 4 -> 5) extra_from # A tibble: 2 x 4 id grade item1 item2 <dbl> <dbl> <dbl> <dbl> 1 25 5 2 3 2 26 5 4 5 # (01) Fill missing data with values from "extra_form" - don't update existing data df %>% rows_patch(extra_form, by = "id") # A tibble: 5 x 4 id grade item1 item2 <dbl> <dbl> <dbl> <dbl> 1 22 3 4 5 2 23 3 5 4 3 24 4 2 1 4 25 5 2 3 5 26 4 4 5 # (02) Update all overlapping variables using the "extra_form" (i.e., ID 26 grade will go from 4 -> 5) df %>% rows_update(extra_form, by = "id") # A tibble: 5 x 4 id grade item1 item2 <dbl> <dbl> <dbl> <dbl> 1 22 3 4 5 2 23 3 5 4 3 24 4 2 1 4 25 5 2 3 5 26 5 4 5
October 30, 2025 at 9:27 PM
Reposted by Crystal Lewis
kbriney.bsky.social
I'm deeply grateful that @lyndamk.bsky.social wrote a lovely blurb for my book, "The Data Management Workbook," which comes out in just over a month.

I really admire Lynda's work, her books, and her recent efforts with the @datarescueproject.org.
Kristin Briney's newest publication offers a practical guide to implementing the core principles of data management. The goal of data management is to make implicit assumptions explicit. Briney's exercises provide guidance for articulating the critical and foundational work that is often assumed, and she does so in a lively and accessible manner. In addition to guiding researchers and librarians, this workbook, combined with her first book, Data Management for Researchers, could serve as a basis for a graduate-level course on data management. - Lynda Kellam, author of "Databrarianship: The Academic Data Librarian in Theory and Practice"
October 30, 2025 at 6:38 PM
Reposted by Crystal Lewis
jadeynryan.bsky.social
The recording is up if you weren't able to catch this session live and want a walk-through of how to use {fs} to clean up your messy folders!

Thanks again @rladies-bot.bsky.social for the invitation to get back into the #RStats community after my maternity hiatus! 💜
r-ladies-stl.bsky.social R Ladies St. Louis @r-ladies-stl.bsky.social · 11d
Thank you so much to @jadeynryan.bsky.social for the fantastic workshop last night. The recording for Efficient File Management in R with {fs} is now available!

youtu.be/X4i-yOBtn1s
R-Ladies STL: Efficient File Management in R with {fs} with Jadey Ryan
YouTube video by R Ladies STL
youtu.be
October 30, 2025 at 6:20 PM
Reposted by Crystal Lewis
ivelasq3.bsky.social
I'm super excited to give a workshop during next week's R/Pharma conference! Join me if you'd like to discuss the ✨beautiful✨ outputs you can create with #Quarto and #RStats.

📅 Tuesday, November 4 at 9 am CT

🔗 Free to register, too! events.zoom.us/ev/Ai-geyS63...
October 30, 2025 at 3:43 PM
Reposted by Crystal Lewis
ryanscharf.bsky.social
{fs} is one of those extremely dope R packages that I always forget about. the OS specific file path management functions are 👌
r-ladies-stl.bsky.social R Ladies St. Louis @r-ladies-stl.bsky.social · 11d
Thank you so much to @jadeynryan.bsky.social for the fantastic workshop last night. The recording for Efficient File Management in R with {fs} is now available!

youtu.be/X4i-yOBtn1s
R-Ladies STL: Efficient File Management in R with {fs} with Jadey Ryan
YouTube video by R Ladies STL
youtu.be
October 30, 2025 at 3:35 PM
Reposted by Crystal Lewis
r-ladies-stl.bsky.social
Thank you so much to @jadeynryan.bsky.social for the fantastic workshop last night. The recording for Efficient File Management in R with {fs} is now available!

youtu.be/X4i-yOBtn1s
R-Ladies STL: Efficient File Management in R with {fs} with Jadey Ryan
YouTube video by R Ladies STL
youtu.be
October 30, 2025 at 3:26 PM
cghlewis.bsky.social
Right now! @jadeynryan.bsky.social is doing such an awesome job walking us through using the {fs} package to work with files, with bonus Halloween content! @r-ladies-stl.bsky.social
October 30, 2025 at 12:03 AM
Reposted by Crystal Lewis
drjoehanson.bsky.social
When people learn with ChatGPT instead of following their own searches, they end up knowing less, caring less, and producing worse advice, even when the facts are the same.

Friction is an essential ingredient for learning! Convenience makes us shallow.

academic.oup.com/pnasnexus/ar...
Experimental evidence of the effects of large language models versus web search on depth of learning
Abstract. The effects of using large language models (LLMs) versus traditional web search on depth of learning are explored. A theory is proposed that when
academic.oup.com
October 28, 2025 at 3:14 PM