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Pingfan Hu

@pingfanhu

PhD Student Systems Eng @ GWU πŸ¦› | Choice Modeling on EVs πŸš™πŸ”‹ | Survey Design | #rstats dev | Pet Owner & Lover 🐈

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01.10.2024
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Latest posts by Pingfan Hu @pingfanhu

surveydown (John Paul Helveston, GWU) | posit::conf(2025)
surveydown (John Paul Helveston, GWU) | posit::conf(2025) YouTube video by Posit PBC

My talk from #positconf 2025 is now up! I got to introduce our survey platform and #rstats package #surveydown. It's been a fun project with @pingfanhu.bsky.social & Bogdan Bunea, and I hope it can be useful for the community of survey researchers out there!

www.youtube.com/watch?v=Vwoe...

08.11.2025 13:06 πŸ‘ 8 πŸ” 2 πŸ’¬ 2 πŸ“Œ 0
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Announcing surveydown v1.0.0! – surveydown.org We are thrilled to announce the v1.0.0 release of surveydown, a stable release with improvements to YAML settings, page navigation, question creation, and a smoother overall developer experience.

πŸŽ‰ Announcing surveydown v1.0.0!

surveydown is an #opensource #rstats package for building surveys with #Quarto & #Shiny. This release improves the survey design experience, including:

- Simplified YAML settings
- Auto page navigation
- Previous buttons!

More at surveydown.org/blog/2025-11...

25.11.2025 21:53 πŸ‘ 171 πŸ” 31 πŸ’¬ 6 πŸ“Œ 2

🀣🀣🀣

08.10.2025 17:53 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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surveydown: An open-source, markdown-based platform for programmable and reproducible surveys This paper introduces the surveydown survey platform. With surveydown, researchers can create surveys that are programmable and reproducible using markdown and R code, leveraging the Quarto publicatio...

Excited to announce that our paper with @pingfanhu.bsky.social and Bogdan Bunea on our #rstats package {surveydown} is now published in @plosone.org

The paper compares the benefits of using a code-based approach to survey design, leveraging #quarto and #shiny

journals.plos.org/plosone/arti...

29.08.2025 20:37 πŸ‘ 68 πŸ” 19 πŸ’¬ 2 πŸ“Œ 1
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Introducing sdstudio: A companion GUI for surveydown – surveydown.org A brief walkthrough of the sdstudio R Package, a companion GUI for surveydown.

Excited to announce the release of our latest #surveydown project: {sdstudio}

A GUI studio that runs as a local #rshiny app for building, previewing, and managing surveydown surveys. Check out our latest post!

πŸ“£ Should out to @pingfanhu.bsky.social who built it!

surveydown.org/blog/2025-06...

07.07.2025 13:28 πŸ‘ 10 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1

Glad our users are growing!

06.06.2025 23:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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More and more people are trying out our #surveydown survey platform! πŸš€

If you work with surveys, give it a look: an open-source, fully reproducible, programmable, and markdown-based survey platform, built with ❀️, #rstats, #shiny, and #quarto

surveydown.org

06.06.2025 23:14 πŸ‘ 26 πŸ” 2 πŸ’¬ 4 πŸ“Œ 1
Video thumbnail

New blog post! 🚨

The #surveydown πŸ“¦ now has shiny gadgets to make it easier to insert pages and questions into your surveys! Check out the post by @pingfanhu.bsky.social to see more

surveydown.org/blog/2025-04...

#rshiny #rstats #quarto

09.04.2025 18:48 πŸ‘ 12 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
Photo of Steve Crawford, Β program executive for NASA's Open Source Science Initiative, giving the keynote for the GW open source conference, 2025

Photo of Steve Crawford, Β program executive for NASA's Open Source Science Initiative, giving the keynote for the GW open source conference, 2025

Did not know the software processing James Web Telescope data was #opensource 😲

At the first ever GW open source conference #gwoscon

24.03.2025 13:39 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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– surveydown.org

Do you use surveys and #Rstats? We have the package for you!

#surveydown combines #quarto_pub and #rshiny to make dynamic, interactive surveys that render to a shiny app.

Also, v0.5.0 is now on CRAN! πŸŽ‰

Thanks to @pingfanhu.bsky.social, user progress can be restored via cookies

surveydown.org

25.11.2024 13:50 πŸ‘ 12 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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My most recent project is the {surveydown} πŸ“¦ for building dynamic, markdown-based surveys with #quarto that render into a #shiny app! Co-authored with @pingfanhu.bsky.social and Bogdan Bunea.

Check it out the docs site here: https://surveydown.org/

01.11.2024 12:33 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Congrats! πŸŽ‰πŸŽ‰πŸŽ‰

25.10.2024 12:22 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Group photo of Lujin's dissertation committee

Group photo of Lujin's dissertation committee

Congrats to Dr. Lujin Zhao on a successful dissertation defense! πŸŽ‰

Lujin's research examines transportation mode choice as well as #EV mileage and disparities in EV supply across the US.

He is also the 3rd PhD graduating from my lab in 2024 (also 3rd PhD ever from my lab...it's been a busy year!)

24.10.2024 23:10 πŸ‘ 3 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Nice car!

01.10.2024 17:36 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0