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Voilà: Francis Gagnon

@chezvoila.com
4K followers 750 following 2.6K posts

Information design and data visualization studio focused on the environment, social development, and governance. Montreal (since 2013). English and French Interactives, dashboards, reports, presentations, training Posts by Francis Gagnon, founder

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Voilà: Francis Gagnon @chezvoila.com · 11h
Only 7.5% of @datavizsociety.bsky.social are paid members. It's USD 99 / year ($250 for patrons who feel like it). Don't take this association for granted, as it is supported by volunteers and depends entirely on member subscriptions and sponsors. new.datavisualizationsociety.org/membership/
Waffle chart of Data Visualization Society members, showing that 1,500 are paid members and 18,408 are free members.
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Nicola Rennie @nrennie.bsky.social · 29/09/2026
This week's #TidyTuesday data looks at health metrics in cities across the world 🏥 I created a dot density plot of the population density around hospitals 📊 Thanks to @gabspalomo.bsky.social for curating this week's dataset! #RStats #DataViz #ggplot2
Four-panel dot density chart comparing the median population living within 1 km of a hospital in 2025 across World Bank income groups. Each dot represents approximately 200 people. Low-income countries have 50,000 people, lower-middle-income countries 53,000, upper-middle-income countries 44,000, and high-income countries 28,000. The chart’s main message is that higher-income countries tend to have lower population density around hospitals.
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Joshua Stevens @jscarto.bsky.social · 28/09/2026
Lots of Phosphor updates over the weekend, including: - Automatic colorblind-safe checks - Parabolic curve adjustments for corrected gradients - Preview your palette on a map, plot, or image - Larger library of preset palettes - A new Legend Lab - Support for #RStats www.joshuastevens.net/phosphor/
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Voilà: Francis Gagnon @chezvoila.com · 28/09/2026
The talk is now online. It is one of the best on the topic, with speakers at the center of the international practice, famous examples and a very good format that keeps your attention. 📊
youtu.be
At first glance: How visualising climate can change the game
YouTube video by CMCC Channel
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This Many Years Ago @thismanyyearsago.bsky.social · 27/09/2026
64 years ago, on the 27th of September 1962, Rachel Carson's book Silent Spring was published. It handled the environmental harm caused by the pesticide DDT and the disinformation spread by the chemical industry. Carson managed to sway public opinion and even policy. #otd #history 🗃️
Rachel Carson photo credit: Science History Images / Alamy
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Alark Joshi @alark.bsky.social · 25/09/2026
Early bird registration for IEEE VIS ends today!! The program looks amazing and has lots of relevant content for practitioners too! Sign up for in-person attendance in Boston, Paris, or Tianjin!!! Registration: ieeevis.org/year/2026/in... Follow @ieeevis.org for more details about #ieeevis 📊
ieeevis.org
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Voilà: Francis Gagnon @chezvoila.com · 25/09/2026
I've done some live-posting of the conference below 👇 something I miss from the good old days of Twitter. Bring back the hashtags!
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Voilà: Francis Gagnon @chezvoila.com · 25/09/2026
Unveiled today. 📊
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Voilà: Francis Gagnon @chezvoila.com · 25/09/2026
First time I see the original blanket by Ellie Highwood. Presented by Prof. Saffron O'Neill. What a piece of dataviz history. 📊
A quote next to a child in a living room seen from behind wearing a striped knit blanket.
"This is a much-loved gift from our colleague and friend Ellie; and something that is still in daily use years later! It's amazing to think of its story, and how it helped inspire Ed to create the Climate Stripes."
Professor Jen Catto, Climate Scientist, Mathematics, Exeter University
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Bryony Miles @bmdataviz.bsky.social · 25/09/2026
Hello Bluesky.... Big thank you to @chezvoila.com for the Dataviz Community Starter Pack. Here's short video walkthrough of some of our 2025-26 projects
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Richard A Carter @richardacarter.bsky.social · 08/12/2025
Will be of interest to quite a few I know - new Open Access book "The Visual Life of Climate Change" by Saffron O’Neill, critiquing the often formulaic imagery of climate change, and presenting a manifesto for opening up its visual discourse. bristoluniversitypressdigital.com/monobook-oa/...
Book cover - the visual life of climate change by saffron o'neill. Spectral bands from cold blue to hot red, filtering stock climate change imagery.
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Voilà: Francis Gagnon @chezvoila.com · 25/09/2026
In 20 minutes
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Voilà: Francis Gagnon @chezvoila.com · 24/09/2026
What fresh Adobe hell is this? Even PDFs are trying to become a social media platform. This is all with our best interest at heart, clearly.
Get inspired by curated PDF spaces.
- Learn about PDF spaces: See what PDF Spaces can do, how it can help you, and easy ways to get started using it
- Elite Performance Hub_Inspired by Real Madrid: Master pressure, elite performance and a champion mindset using this PDF. Space inspired by global football club Real Madrid.
- How to Hit Your First $100k with Mrs. Dow Jones: Use her smart money strategies to hit your first big milestone
- PDF Spaces in Action - Marketing: Learn how PDF Spaces helps you be a more productive marketer
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Voilà: Francis Gagnon @chezvoila.com · 24/09/2026
Aaron is dropping several great charts per day. A must follow!
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Jared Beilby @beilby.bsky.social · 24/09/2026
Haven't posted here for awhile, but I've spent most of the year making charts and writing articles at @usatodaysports.usatoday.com! Some of my recent charts 👇
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Voilà: Francis Gagnon @chezvoila.com · 24/09/2026
The results of the State of the (dataviz) Industry Survey of the @datavizsociety.bsky.social just came out. Of course, it's full of charts. 📊
new.datavisualizationsociety.org
Data Visualization State of the Industry 2025 Report
Executive Summary The 2025 SOTI survey was disseminated online between December 17, 2025 and January 30, Distribution mechanisms included an email announcement and series of reminders from the…
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Joe Murphy @joemurph.com · 24/09/2026
Got to help Rob Wile on this charty piece (which is *not* behind the NBC News paywall) showing how key economic indicators have changed since the Iran war started [no paywall] www.nbcnews.com/business/eco...
nbcnews.com
The U.S. economy before and after the Iran war, in five charts
Nearly seven months in, the conflict now casts a cloud of uncertainty — with no end in sight.
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RJ Andrews @infowetrust.com · 24/09/2026
We wanted a staircase that could disappear. It needed four walls, rigid steps, and room for extravagant maps. Then it had to collapse flat and ship in an envelope. My latest for Chartography: www.chartography.net/p/a-world-of...
chartography.net
A World of Maps, Folded Flat
Turning the David Rumsey Map Center’s spectacular stairwell into a pop-up book.
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Voilà: Francis Gagnon @chezvoila.com · 24/09/2026
Love to see a novelty map go viral. 📊
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Aaron Becker @aaronjbecker.bsky.social · 22/09/2026
You could find your way along the Nova Scotia coast blind, just by timing the blinks. Every lighthouse flashes on its own rhythm, a set interval and colour no neighbour repeats. Sambro Island off Halifax has burned since 1758, the oldest working lighthouse in North America. #lighthouse #NovaScotia
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Voilà: Francis Gagnon @chezvoila.com · 24/09/2026
When you work with biologists and they invite you to their retreat. Merci @biodiversite-quebec.ca
Headshot of Francis outside in front of the sign for the inn at Duchesnay. The sun is shining.A group of people waking away in the countryside during the golden hour.A path in front of a forest and then a lake in the background. There is a black rooftop visible in the forest. It's a late summer scene.A river seen from a small bridge. There is another small bridge seen 50 metres away and a forest each side of the river.
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Michael Friendly @datavisfriendly.bsky.social · 24/09/2026
Could be a game changer for diverging color palettes
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Voilà: Francis Gagnon @chezvoila.com · 23/09/2026
Rare visit to a fast food joint and it’s like they were expecting me.
Paper placemat with a data illustration of an area chart showing the direct relationship between the amount of cheese and the amount of happiness. The area is a picture of cheese.
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Voilà: Francis Gagnon @chezvoila.com · 23/09/2026
The book of @tizianadearing.bsky.social, Absent Data, is now available for pre-order. Pre-orders are really important to assess the interest in a book, so I've pre-ordered my copy today. 📊 The support of the dataviz community for these books benefits everyone.
tizianaalocci.com
Book: Absent Data — Tiziana Alocci
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Information Plus Conference @infoplusconf.bsky.social · 22/09/2026
Information+ 2027 is coming to Milan! Join us on 7-9 June 2027 at Politecnico di Milano for three days of presentations, talks, workshops and exhibition pieces around information design and data visualization. The website is now live: informationplusconference.com #InformationPlus2027
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Scientific American @sciam.bsky.social · 22/09/2026
Tour guides at the Parthenon might have you believe the ancient Greeks used an optical illusion to make it look impeccably straight. This mathematician has doubts.
scientificamerican.com
Mathematician reveals the truth behind the Parthenon’s optical illusion
The Parthenon sits atop a platform that is curved into a subtle hill shape that some say makes the structure appear straighter—but is that true?
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Guardian US @us.theguardian.com · 21/09/2026
The “jaw-dropping” El Niño currently heating up the planet has burst through the highest temperature ever recorded for the phenomenon, several months before its expected peak.
A line chart showing temperature anomalies in the Niño 3.4 region of the Pacific Ocean, compared to a 30-year rolling base period since 1982.

A gold line shows temperatures in 1997, a teal line in 2025, and a red line in 2026. The red line surpasses all others reaching 3.07ºC, and at an earlier point (September) than the previous El Niño that reached a comparable range in November 2015.
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Ketan Joshi @ketanjoshi.co · 22/09/2026
This is going to be a thread of AI greenwashing getting pumped out at New York Climate Week Here's one from today: Siemens, raking in MOUNTAINS of $$ from selling gas turbines to data centres (not mentioned) says: “we are racing to mitigate this as fast as possible" apnews.com/article/clim...
On the other hand, Eva Riesenhuber, the head of sustainability at the German automation company Siemens, and Evelyn Wang, vice president for energy and climate at the Massachusetts Institute of Technology, said AI is too important to humanity and will help tackle climate change.

Data centers adding to climate and water problems “is not forever,” according to Wang, who told The Associated Press that data centers are five years away from being water neutral and about a decade away from no longer adding to planet-warming emissions.

Acknowledging these concerns, Riesenhuber said “we are racing to mitigate this as fast as possible because we are hooked on the intelligence, and we do need the intelligence to design the future that this planet needs.”a chart showing siemens gas turbine sales will add emissions the equivalent to pakistan
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Voilà: Francis Gagnon @chezvoila.com · 21/09/2026
The spots for women who post dataviz content regularly are still open. 📊 👀
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Decision Desk HQ @decisiondeskhq.bsky.social · 21/09/2026
Not since 1992 has this much of Congress headed for the exits before an election. 100 members — 84 House, 16 Senate — have left or announced departures since January 2025. That's 18% of the 119th Congress.
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Voilà: Francis Gagnon @chezvoila.com · 20/09/2026
#dataviz 📊
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RJ Andrews @infowetrust.com · 20/09/2026
Distribution of the black spruce in North America. The distribution of important forest trees (1938). archive.org/details/dist...
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Jer Thorp @jerthorp.bsky.social · 18/09/2026
You'll learn to make art from bird data, and to cultivate a mindful birding practice. You'll discover a whole world of creative possibility and you'll learn a TON about birds and the history of humans counting them. The course is online and cohort based. So you will learn with a cozy group.
Colorful data visualization of an entire year of bird observations from Orange County FloridaDiagram of how a bird becomes dataThis course was life-changing! I now enjoy time outside looking for birds at home and away and I learned a lot more on coding
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Voilà: Francis Gagnon @chezvoila.com · 19/09/2026
#VisualisingClimate2026
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Joe Boomgard-Zagrodnik @joeboomzag.bsky.social · 18/09/2026
I built a statistical model to forecast ski conditions using seasonal climate models. Summit at Snoqualmie in Washington has the worst ski forecast in the western US this winter. Makes sense given the “El Niño on steroids” model signal. Go south for better skiing ⛷️ Try it out: where2.ski
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Voilà: Francis Gagnon @chezvoila.com · 18/09/2026
"Every paper page at IEEE VIS 2026 has a discussion under the abstract, and that discussion is a thread on Bluesky (or more correctly, on the AT Protocol). Anyone can read it on the page, and attendees can comment and like there too, whether or not they have a Bluesky account."
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RJ Andrews @infowetrust.com · 18/09/2026
Innovation is the open-source language, which you can think of as markdown for dashboards. * one simple file with queries/charts/layout that you own, can live in git next to rest of your data stack * format can be used with AI to get what you want in a much cleaner fashion 👀 dbtcharts.com/language/
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Voilà: Francis Gagnon @chezvoila.com · 17/09/2026
As a non technical person, I’ve been intrigued by this and trying to understand what it is. I believe it’s a chart making tool with a set of instructions underlying an AI to produces good charts that you can verify. Right?
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Amanda Shendruk @not-ship.com · 16/09/2026
I really didn't want to add to the AI hype. But there's something the reporting is missing. That scary number? The ">10% chance we'll all perish" number? It's nonsense. It's just a bullshit hunch with a percentage sign. www.not-ship.com/stop-trustin...
not-ship.com
Stop trusting the extinction math
The AI industry's favourite 'statistic' isn't backed by data. And it distracts from what's really going on.
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Nicola Rennie @nrennie.bsky.social · 16/09/2026
This week's #TidyTuesday data is from the Dead Sea Scrolls digital library 📖 I created an interactive Voronoi diagram showing the number of images of manuscripts found in different locations 📊 #DataViz #ggplot2 #RStats
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Tiziana Alocci @tiziana.bsky.social · 14/09/2026
For the past 9 months I’ve been obsessed with seafarers #data. I sailed aboard a cargo ship, tracked vessels from beaches, listened to the people behind an industry we rarely see. See all the data visualisations here: www.tizianaalocci.com/home/twelve-... #dataviz
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Dominik Moritz @domoritz.de · 16/09/2026
We are trying a big experiment this year for @ieeevis.org where we will have paper discussions hosted on @atproto.com. So look out for more activity in November.
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Voilà: Francis Gagnon @chezvoila.com · 16/09/2026
Thanks to @ieeevis.org and anyone else who nudges the dataviz community towards Bluesky. It works!
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Voilà: Francis Gagnon @chezvoila.com · 16/09/2026
Nice to see @munzner.bsky.social on Bluesky today. 📊
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Voilà: Francis Gagnon @chezvoila.com · 15/09/2026
A tool to extract colour codes from an image.
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Amelia Antzée | Studio ALFA Design @ameliaantzee.bsky.social · 14/09/2026
Logged in to Bluesky today and found I have lots of new followers via the Data visualization community starter pack by @chezvoila.com 😍 Check it out! I'm a creative information designer / data artist with a fondness for nerdy qualitative data. Here's an introduction thread I wrote some time ago:
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Voilà: Francis Gagnon @chezvoila.com · 14/09/2026
Really interesting chart that frames the global food chain discussion. 📊 - Double encoding (position and colour) helps. - Normalization across studies is impressive (how?). - Wondering what date of studies would show. - Maybe "Overall effect" should be more visible?
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Attila Bátorfy @attilabatorfy.bsky.social · 14/09/2026
Today on Cabinet of Infographic Curiosities we present a long-forgotten graphic method: the Haeckel-inspired organic diagrams created by the Russian-German sociologist Paul von Lilienfeld to visualize social complexity. Read the full story here: attilabatorfy.substack.com/p/a-graphic-...
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Voilà: Francis Gagnon @chezvoila.com · 14/09/2026
The PowerPoint aesthetic has entered the electoral campaign in Québec.
A large inter city bus painted in red and blue, with "on est là" (we are there) at the back and then three white squares: Rassembler (unite) with a bunch of blue dots, réparer (repair) with a blue tool, and bâtir (build) with a dotted line drawing a cityscape. Two people are waiting next to the bus.
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Voilà: Francis Gagnon @chezvoila.com · 14/09/2026
The UN IPCC is looking for an entry-level designer to create charts and infographics. Interesting how they call it "graphic designer" but expect dataviz. 📊
ipcc.ch
Graphic Designer in the IPCC Working Group I Technical Support Unit — IPCC
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