Yan Holtz@R_Graph_Gallery

Software engineer who ❤️ #dataviz. Creator of data-to-viz.com and the R, Python, D3 and React graph galleries. ➡️ productive-r-workflow.com 📈 🌊 🍺

 Montpellier, France
yan-holtz.com
Joined February 2016
510 Photos and videos
So glad!! 🔥☀️ Less than a week back at work, and 72 people have already joined my data visualization course. d3-loves-react.com Thank you for the trust! 🙏
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I'm giving a #dataviz live demo in 3 hours! I'll use D3.js, react, github, gh-pages, Claude and others to (hopefully) create something cool. You can expect sweating, bugs, fun.. Real life! luma.com/lz5mlggi?tk=nGAPJt
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⚠️ Pro tip: If you have 2 neighbour graphs sharing a variable, don't forget to add a cross-highlight interaction!
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Another beautiful scrollytelling article published by a student 😍 I believe in a few years all scientific publications will a sibling a page like this to communicate results to a broader audience. Well at least I would love it !
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Forgot the link: verit.pro/2026_CaRM_Scrolly/ And other projects by my students: react-graph-gallery.com/stud…
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Wondering how to build a smooth #dataviz transition like this? I'm giving a live demo next Monday about my latest dataviz tech stack! luma.com/lz5mlggi?tk=nGAPJt
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Just judged the 38 best projects of the @PacificDataviz challenge. 1 specific tech stack is becoming the norm - html/css/js = foundation of ALL projects - claude code = most popular AI - d3.js and React = very popular No Shiny/Streamlit No no-code tool d3-loves-react.com
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You do not have to stick to R Shiny because you have some data related tasks to perform! JS can do it. Or you can call webR. Or plumber. And then get a good UI! experiment: just built a PCA explorer in 5 minutes
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Want bespoke, interactive visuals like this? Here is all you need: 1️⃣ HTML/CSS/JS: foundation 2️⃣ React: reusable components 3️⃣ D3.js: dataviz engine 4️⃣ ShadcnUI: battle-tested UI 5️⃣ Motion: animations 6️⃣ Claude Code: video: made by d3-loves-react.com students!!
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Took me 4 years to try Github ➡️ Now use it daily Took me 2 years to switch ads provider ➡️ Cost me so much $$ Took me 3 years to finally learn d3-loves-react.com ➡️ I'll never use Shiny again Same for Claude Code. Same to use skills.. Why is it so hard?
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Oh no! New dataviz caveat to add to my collection: ➡️ Do not put New Zealand below Australia just because it does not fit... Real collection is here: data-to-viz.com/caveats.html
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A few years ago I left a 6 figures job to start creating educational content. Today I already have 135 students for the cohort #2 of my #dataviz online course (d3-loves-react.com) I'll never be as rich as I used to be. But hey, working for that place??!! 😀
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Frustrated by your #dataviz tool? 🤔 All your dream charts could be built with modern tools.️ And AI makes the switch ~easy! Nobody believes me, so I created a little gallery to show what ppl ended with after learning: react-graph-gallery.com/stud…
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14 years ago I built my first graph 😳 Since then, I jumped from frustration to frustration: terrible defaults, limited options, no interactivity, slowness, hard code.. Today my tech stack solves it all. And I'm giving a little free talk on the topic! luma.com/lz5mlggi
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Merri is a UX designer. She learnt D3.js + AI in a few weeks. Now she actually implements the designs! Turns out designers are my best students. They already have the vision! App: mwoohoohoo.github.io/Seasona… Story: react-graph-gallery.com/stud…
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7 years ago I switched from R dev to Web dev. 9 reasons I will never use Shiny again: 1️⃣ Slooooow Slow to load. Slow to interact. Slow to deploy. 2️⃣ Custom viz HTML widgets are great, but they're very limiting compared to D3.js 🧵
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9️⃣ Design You can build a real brand identity and a great design.. but it's going to be a pain. Don't get me wrong: I love Shiny and I think it's an awesome tool for some very specific tasks.
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But in an era where AI writes the code for us, the entry ticket to a much better world is tiny. If you're tempted, check out my d3-loves-react.com! There's no coming back. ---- video: react-graph-gallery.com/exam…
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