The CHI Papers Explorer is back for #CHI2026! As every year, you can explore all 2,769 papers using semantic search. Type any topic, see papers ranked by relevance, and build your schedule. Try it and please share with everyone heading to Barcelona: johnguerra.co/viz/chi2026P... @chi.acm.org #HCI

Nice opinion piece on the state of ai coding www.nytimes.com/2026/02/18/o...

There are 10.990 municipalities in Germany. From Berlin to the smallest municipality. All their names are shown in this map. The 50 largest cities’ names appear one after the other, after that they appear in chunks of increasing size. #30DayMapChallenge Day 24: Places and their names #ggplot2

The bats are a surprise. 📊 By @ourworldindata.org

Loved this opinion piece calling for algorithms that support humans instead of advertisers. Create art not content youtube.com/watch?v=EO14...

My #IEEEVIS 2025 paper explorer is live! 🎉 👉 johnguerra.co/viz/ieeevis2... 👈 An interactive #dataviz to explore 300+ papers by similarity. Perfect for: ✨ Discovering papers related to your interests ✨ Planning which sessions to attend ✨ Creating your own paper list (new!) Pls help me distribute it

Very interesting what you can do now with Visual Studio Code + Github Copilot Agent mode. Nice tutorial here by @burkeholland.bsky.social www.youtube.com/watch?v=duty...

What a great summary history of JavaScript by deno deno.com/blog/history...

Thrilled to have played a part in this excellent story about the stock market during Trump's first 100 days www.cnn.com/interactive/...

To help me keep track of the #chi2025 papers that I don't want to miss I made this quick prototype: 👉🏼 johnguerra.co/viz/chi2025P... 👈🏼 * Search by semantic content * Aggregate multiple searches * Find papers by authors, institutions, types, awards... * Quickly check where to go from your 📲

I wrote about the data-to-ink ratio and a new game I've invented called "ink golf" for data visualization. I hope you enjoy: www.frank.computer/blog/2025/04...

Here is my #chi2025 paper explorer. Visually explore papers by similarity, search for an specific topic or even find what specific sessions to attend. Please let me know what you think! #dataviz @chi.acm.org 👉🏼 johnguerra.co/viz/chi2025P... 👈🏼

For @johnguerra.bsky.social's @northeasternu.bsky.social #ProgramDesignParadigms class I built an @observablehq reactive widget that lets users upload labeled photos and preview them! 📸 Great for family trees or user profiles. 👉 See demo: observablehq.com/@vinal-dsouz...

For @johnguerra.bsky.social's @northeasternu.bsky.social #ProgramDesignParadigms class, I built an @observablehq.com reactive input widget that allows selecting complex data objects from a custom list. See demo -> observablehq.com/d/1f822423aa...

For @johnguerra.bsky.social @northeasternu.bsky.social #ProgrammingParadigms class I built an @observablehq.com reactive input that allows users to plan their events efficiently and easily. See demo-> observablehq.com/@ryans-works...

For @johnguerra.bsky.social's @northeasternu.bsky.social #ProgramDesignParadigms class I built an @observablehq.com reactive input that allows users to log an emotion associated with a selected activity. See demo -> observablehq.com/@tian5252/em...

For @johnguerra.bsky.social's @northeasternu.bsky.social #ProgramDesignParadigms class I built an observablehq.com reactive(MiningMonitorWidget) input that allows users to filter mining machine data by status and visualize summaries in real time. See demo->https://observablehq.com/d/17ad2f133c3f874a

For @johnguerra.bsky.social's @northeasternu.bsky.social #ProgramDesignParadigms class I built an @observablehq.com reactive input that allows user to seamlessly integrate Bluesky post into their notebook with a single URL. See demo -> observablehq.com/@luozihyuan/...

For @johnguerra.bsky.social @northeastern.bsky.social #ProgramDesignParadigms class, I built an @observablehq.com reactive input that allows users to filter fifa player data interactively. See demo --> observablehq.com/d/2ea3948c8e...

For @johnguerra.bsky.social @northeasternu.bsky.social #ProgrammingParadigms class, I built a @observablehq.com reactive widget allowing users to upload a photo and add tags. Here is the demo: observablehq.com/@lang-min-ne...

Gain hands-on experience and learn data viz best practices at Outlier 2025. Early bird rates end on April 30. Register here: buff.ly/bUQHpFY

Tactile charts are an important tool for conveying data to blind and low vision people via embossed paper. However, tactile charts require high levels of time and expertise to design. Introducing Tactile Vega-Lite, new work at #CHI2025 led by MIT SM student Katie Chen news.mit.edu/2025/making-...

Very nice @ray-zou.bsky.social 👏 You beat me to it jajaja johnguerra.co/viz/chi2025P...

Do you want to explore your own @ieeevis.bsky.social co-authors and citations networks? Check out my latest #dataviz 👉🏼 johnguerra.co/viz/visPubNe... 👈🏼 I'm showing the @northeasternu.bsky.social VIS Lab professors network, and the overall authors with more than 20 collaborations. Create your own!

Here is an @observablehq.com notebook I'm doing a demo on observablehq.com/d/6e7d9d61cc...

In minutes I'll be starting my talk Interactive Information Visualization: Unleashing the Power of Visual Data Exploration at the #RiceVCS Please check my slides for tons of links here johnguerra.co/viz/slides/I...

📢 Shout-out for @northeasternu.bsky.social Michelle Borking's research at the #RiceVCS 👏👏👏

Do you want to animate a @vega-vis.bsky.social vega-lite or @observablehq.com Plot chart? Here is a quick experiment that might help you that animates between two SVGs. Let me know what you think! #dataviz. 👉🏼 observablehq.com/@john-guerra...

How many attributes can you visualize in one chart? A little experiment on multi dimensional #dataviz that I made for a talk 👉🏼 observablehq.com/@john-guerra...

Great article on animation for #dataviz by @eagereyes.org and @allisonhorst.bsky.social from @observablehq.com 👏🏻 observablehq.com/blog/effecti...

One of my students wanted to use an online image on her page. I challenged her to recreate it with code... and couldn't resist doing my own #generativeArt experiment 😝 observablehq.com/@john-guerra...

DashSpace, our platform for web-based collaborative immersive & ubiquitous analytics, is on GitHub: github.com/Webstrates/D... Paper w/ Marcel Borowski, @pwsbutcher.bsky.social, Janus Bager Kristensen, Jonas Oxenbøll Petersen, @ritsosp.bsky.social, @clemens.klokmose.net + me just accepted to TVCG!

T'is the season to wrap up your projects, so… here's a little write-up on an extensive 🎵 audio → ✏️ transcription journey with @miskaknapek.bsky.social for the Data Stories podcast! observablehq.com/@moritzstefa...

Really cool that Google is demoing Gemini 2 tool use with @vega-vis.bsky.social: www.youtube.com/watch?v=EVze.... Vega-Lite and Altair are really useful for powering AI chart generation because they are fully declarative and there seems to be sufficient training data in the wild.

Here are the slides for my Human Centered AI talk docs.google.com/presentation...

I love #d3js force network visualizations, but usually with larger networks nodes tend to go all over the place. Here is a simple auto-fit trick that you can use to keep all nodes in view: 👉🏼 observablehq.com/@john-guerra... #dataviz @observablehq.com

I had some fun last week by diving deep into label occlusion and placement. There are more solutions out there than I thought, and each solution serves a different purpose. I created a notebook showcasing label occlusion optimized for the Voronoi treemap. observablehq.com/@spandl/labe...  🧵🧵🧵

Second post on the use of titles in data visualization: https://buff.ly/3VizWmg. I propose a simple taxonomy to categorize different types of titles. It has already helped me and my students a lot. There is way more to do, but it's a good start. Happy to hear your feedback: any changes/additions?

New blog post! Updated for 2024, my favorite example of why alphabetical ordering is bad for geographic features -- US presidential results since 1828. The left image shows regional patterns in a geographic ordering that the right (alphabetical) simply loses. benschmidt.org/post/2024-11...

Heading to #Neurips2024 and feeling overwhelmed by the 4k+ papers? 🤯 Check out my paper explorer! Just enter your query and find related papers instantly using sentence embeddings and dimensionality reduction. #dataviz 👉🏼https://johnguerra.co/viz/neurips2024Papers/👈🏼

This NLP JavaScript tool seems very promising compromise.cool

Hi, so I've spent the past almost-decade studying research uses of public social media data, like e.g. ML researchers using content from Twitter, Reddit, and Mastodon. Anyway, buckle up this is about to be a VERY long thread with lots of thoughts and links to papers. 🧵

If you are looking for a PhD opportunity in #DATAVIZ here is a list of options:

If you want something more opinionated: fonts that straddle either geometric / humanist or grotesque / humanist tend to be nice in visualizations, since they have a regular, core structure that is not distracting but are not overly cold My go-to fonts for vis are Avenir or Source Sans Variable

Mosaic v0.12 is out: database-powered scalable, interactive visualization! 📈 One new addition is support for dynamic changes in the backing data. Move between smaller and larger samples to balance speed and comprehensive coverage.

My #dataviz library, smart-labels, now supports keeping labels always visible, with options for prioritizing by font size: www.npmjs.com/package/smar... Here's a work-in-progress network visualization of collaborations within the Northeastern Vis group.

Many great tips here by @peck.phd, sharing with my #dataviz students 👏 On the other hand, I have found that implementing those types of changes in real life is really hard and time consuming. I have been working on reactivewidgets.org to help my students with this, but it is still very hard

A while ago I got interested in computing on color, to help design sets of color palettes that account for both light and dark mode, and color-vision deficiency. I wrote a collection of fun @observablehq.com notebooks - this seems a good excuse to discuss them observablehq.com/@ijlyttle/co...

I created an interactive co-authorship network #dataviz of @ieeevis.bsky.social researchers 👉🏼 observablehq.com/@john-guerra... 👈🏼 This visualization explores the connections between researchers who have co-authored papers at IEEE VIS 1990-2023 Built with reactivewidgets.org and @observablehq.com