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fil.rezo.net
Fil
@fil.rezo.net
1.8K followers 1.5K following 130 posts
maps | data | code | journalism
#D3 & #Observable
👁️‍🗨️ https://observablehq.com/@fil
🌍 https://visionscarto.net/
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fil.rezo.net
I tried out A5 and I liked it
observablehq.com/@fil/a5-dggs
Patterns of areal distorsion of the A5 DGGS.
April 20, 2025 at 3:10 PM
fil.rezo.net
In the chart published today by the New York Times (Stocks Tumble as Investors Balk at Tariff Plan), “the orange bars indicate weekly losses from end of previous week”. How to do this with Plot?

observablehq.com/@recifs/week...
A chart showing weekly gains and losses as bands of two opposite colors depending on the sign of the difference. A classic line chart is overlaid, broken by week.
April 5, 2025 at 7:35 AM
fil.rezo.net
Chew (from Atlanta) was playing in our village tonight. *Incredible* energy.
3dchew.com
Chew en concert aux Roches l'Évêque, 14 mars 2025
March 14, 2025 at 9:53 PM
fil.rezo.net
Added two inputs to the ternary plot utility
observablehq.com/@fil/linked-...
Animated demo of linked ternary inputs.
February 28, 2025 at 7:40 AM
fil.rezo.net
Big number chart that says: Estimated deaths associated with the partial funding suspension between January 24th, 2025 at 12:00 PM EST and present Estimated adult deaths: 14498 Incrementing every 3.3 minutes Estimated infant deaths: 1543 Incrementing every 31 minutes
February 26, 2025 at 10:26 PM
fil.rezo.net
the shape becomes quite slanted when you show it over Paris
palisades fire overlay on paris… very slanted, but it covers more than half the area of the French capital
January 14, 2025 at 8:09 PM
fil.rezo.net
The Airocean projection in Proj.4 at last!
github.com/OSGeo/PROJ/i...
(thanks to @ Pierre Louvart)
Buckminster Fuller’s Airocean projection (image made with D3).
January 8, 2025 at 9:23 PM
fil.rezo.net
same energy
Katie Bouman reacting to the first photo of a black hole showing up on her screen.
November 28, 2024 at 10:58 AM
fil.rezo.net
remarkable!
Substituting with Mercator, for funsies
November 27, 2024 at 8:03 AM
fil.rezo.net
@reka.visionscarto.net and I have used the Imago projection, designed by Justin Kunimune, for a map of early human migrations in @soniashah.bsky.social’s book “The Next Great Migration” (2020)
www.visionscarto.net/peopling-the...
A map in shades of gray, showing early human migrations from Eastern Africa to South America.
November 26, 2024 at 1:56 PM
fil.rezo.net
#30DayMapChallenge today is map projections!
You could try one of these with #D3.js
d3.observablehq.cloud/d3-geo-polyg...
The world represented on a dodecahedral map projection.
November 26, 2024 at 1:56 PM
fil.rezo.net
love this difference chart
difference chart between the actual streamflow and the expected threshold based on the day of year.
November 25, 2024 at 11:39 AM
fil.rezo.net
would it help to add axes? the shape is quite off-center
Added axes on the chart, showing where the origin is compared to the apparent center of the shape
November 13, 2024 at 10:18 AM
fil.rezo.net
I just released v2.0.0 of d3-geo-polygon — just in time for the #30DayMapChallenge
New projections, new documentation & lots of other changes, see details here:
github.com/d3/d3-geo-po...
new deltoidal projection new rhombic projection
November 2, 2024 at 2:53 PM
fil.rezo.net
I was ★★ by this very simple and yet powerful interaction pattern that the NYT made on their election polls page; I knew I had to reproduce it. Lots of small details to figure out… now it's available as a reusable options transform for Observable Plot.
observablehq.com/@observableh...
September 24, 2024 at 3:22 PM
fil.rezo.net
I started using #D3js because as an aspiring cartographer I wanted to use the Bertin projection, and it didn't exist. I thought it would be a week-end project. Ten years later, still working on it.
Map of the world projected with Bertin 1953.
September 12, 2024 at 5:39 PM
fil.rezo.net
Hello #dataviz friends! What do you think of little explainers like this one?
observablehq.com/@fil/benchma...

yay? nay? boring?
A neat chart for benchmarks
September 10, 2024 at 9:44 AM
fil.rezo.net
Fixed a nasty bug in observablehq.com/@visionscart...
thanks to @harrystevens.bsky.social for spotting it and pairing !
A map showing distance to shore on the spherical earth
February 11, 2024 at 5:57 PM
fil.rezo.net
ESA’s climate office is launching “Little pictures” — a data visualization competition for simple images that tell a lot. Here's how to recreate one of their examples with Observable Plot
observablehq.com/@visionscart...
A simple chart showing the rising sea levels
September 20, 2023 at 7:44 AM
fil.rezo.net
Ever needed to make a ternary plot?
observablehq.com/@fil/ternary...
A ternary plot (scatterplot style) where a dozen fictitious workers are positioned relatively to the % of their roles between three poles: designer, developer, and journalist.
September 15, 2023 at 7:32 AM
fil.rezo.net
This val (#valtown) creates a #D3 chart — server-side — by using linkedom
www.val.town/v/fil.d3Chor...
A chord diagram
September 14, 2023 at 5:21 PM
fil.rezo.net
This val uses Observable Plot to generate a map of earthquakes, server-side, from live data. The map is saved and updated on a daily basis, then served as a web page.
Code & details:
www.val.town/v/fil.earthq...
#valtown #observable #cartography
A map of earthquakes
August 26, 2023 at 1:14 PM
fil.rezo.net
Observable Plot now has code coverage reports, and that makes me stupidly happy.
observablehq.com/plot/
code coverage text report for Observable Plot
August 21, 2023 at 9:10 PM
fil.rezo.net
If you drift randomly from the north pole, where do you touch land?
#cartography #geo #spatial #interpolation #wos
https://observablehq.com/@visionscarto/spherical-wos
a map that produced with a spherical walk-on-spheres algorithm, showing a strong random mix in the center
August 20, 2023 at 10:14 AM