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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 @fil.rezo.net · Jan 3

How to: reproduce this lovely Bivariate Map with Observable Plot
(original by Muhammad Mohsin Raza)
observablehq.observablehq.cloud/pangea/plot/...

UK Bivariate Map

observablehq.observablehq.cloud

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Fil @fil.rezo.net · 6d

…published a new version of d3-tricontour
observablehq.com/@fil/multipo...

Multipolygon tricontour

Since v1.1.0 d3-tricontour can compute multipolygonal contours.

observablehq.com

Reposted by Fil

Yusuf @yusufimaadkhan.com · Aug 28

Reminded me of this (if you think of structural breaks as shifting between equilibria on an S-curve).

observablehq.com/@fil/fitting...

web.archive.org/web/20220523...

Also shows why historical/domain-specific intuition is so important.

HT @fil.rezo.net and Constance Crozier

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Reposted by Fil

James King @jamesking.io · Sep 9

Big fan of @observablehq.com and since their preview release of Observable Notebooks 2.0 my team at Fora Health have integrated Notebook Kit into our app. Works really well so far. Quick demo ⬇️

screen.studio/share/TqvyfFbU

Observable Notebooks 2.0 in Fora Health — Screen Studio

Observable Notebooks 2.0 in Fora Health — Created and shared with Screen Studio

screen.studio

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Reposted by Fil

Mike Bostock @ocks.org · Aug 27

Observable Notebook Kit and Desktop 1.1 are out. Headline feature: database connectors! 🎉 You can now query DuckDB, SQLite, Postgres, and Snowflake directly from notebooks. And it’s self-hosted. And it saves results automatically for performance and stable analysis. observablehq.com/notebook-kit...

Observable Notebooks Database connectors | Observable

observablehq.com

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Reposted by Fil

Andrew McNutt @mcnuttandrew.bsky.social · Jun 17

charts you hate to see

a choropleth map of the western us highlighting the federal lands that are proposed to be sold, colored by blm and USFS

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Reposted by Fil

Martin H. Trauth @martinhtrauth.bsky.social · Jun 16

Very interesting open access article about the "Long-term impact and biological recovery in a deep-sea mining track" by D.O.B. Jones and colleagues. Their photos of the ocean floor after mining, before and after, are simply shocking. #geoscience

www.nature.com/articles/s41...

Typical photograph of undisturbed seabed at the control site with polymetallic nodules, from Jones et al., Nature, 642,112-118, 2025.

Area of track with complete removal of nodules by deep-sea mining in the centre and deeper propulsion tracks either side, from Jones et al., Nature, 642,112-118, 2025.

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Reposted by Fil

Jason Reid @jasonreiduk.bsky.social · Jun 15

If you want to go, there’s just one more day of viewing (Monday 16th). Bring tissues.

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Taylor Shelton @jtsphd.bsky.social · Jun 9

Atlanta is the most surveilled city in the United States.

But because the Atlanta Police Department claims that releasing the locations of these 60,000+ cameras will lead to terrorism, we’ve not been able to map their locations...

Until now. Read more 👇👇

City of Cameras

Atlanta is the most surveilled city in the United States. With 124.14 surveillance cameras per 1,000 people, we not only lead the country, we have more than twice as many cameras per capita as 2nd …

mappingatlanta.org

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Reposted by Fil

André Loez & podcast Paroles d’histoire @andreloez.bsky.social · Jun 5

Fut un temps où les questions géopolitiques avaient une place de premier plan dans l'espace public en France, y compris avec de fantastiques efforts carto & dataviz
Les modifications de #frontières dans les Balkans à la Une du journal Excelsior, 21/2/1921

https://gallica.bnf.fr/ark:/12148/bpt6k4603552m/f1.image

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Reposted by Fil

Corin Faife @corin.bsky.social · Jun 4

As the United States vetoes another Israel-Palestine ceasefire resolution at the UN Security Council, here's a graphic I made for @afp.com showing every veto on a similar resolution since 1970.

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Fil @fil.rezo.net · Jun 4

bump bump

Interactive Journalism @interactives.bsky.social · Jun 4

New on The New York Times : “Do You See Craters or Bumps on the Moon’s Surface?”

Do You See Craters or Bumps on the Moon’s Surface?

www.nytimes.com

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Reposted by Fil

Shannon Mattern @shannonmattern.bsky.social · May 20

"The 1930’s International Atlas of Clouds + of States of the Sky... provides a detailed textual description of different kinds of clouds, their shapes, the occurrences of the clouds, their behaviour, and a description of the disturbances the clouds indicate." socks-studio.com/2024/03/24/o...

A page of the atlas featuring two photos of clouds and two diagrams describing their types and characteristics

A page of the atlas featuring a photo of cirrus clouds and a diagram of its filaments

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Reposted by Fil

Mask Bloc Paris @maskblocparis.bsky.social · May 19

Vous n'aimez pas le covid ? 😷

Vous aimez bien les cartes ? 📍

Ce fil est fait pour vous ! ⤵️

#AutoDéfenseSanitaire
#CovidIsNotOver

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Reposted by Fil

Harry Stevens @harrystevens.bsky.social · Apr 27

A trick for fitting world maps on phones:

Stack two azimuthal equal-area projections, clipped at 90° longitude, each one rotated 180° from the other.

The bottom map covers the top's Antarctica, which reduces the total height and looks nice.

As seen in www.nytimes.com/2025/04/25/c...

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Fil @fil.rezo.net · May 18

Created by Sabine Réthoré
www.sabine-rethore.net
mediterraneesansfrontieres.org

this map is a beauty

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Fil @fil.rezo.net · May 17

On the love ⟷ hate gradient for marmite maps I'm firmly on the right hand side

Kenneth Field @kennethfield.bsky.social · May 15

A blog by Chris Wesson and me on the new contiguous cartogram functionality in ArcGIS Pro www.esri.com/arcgis-blog/...

Marmite maps: now available in ArcGIS Pro!

Love them or hate them, contiguous cartograms become the first of a new cartogram specific toolset in ArcGIS Pro.

www.esri.com

Reposted by Fil

Kenneth Field @kennethfield.bsky.social · May 15

A blog by Chris Wesson and me on the new contiguous cartogram functionality in ArcGIS Pro www.esri.com/arcgis-blog/...

Marmite maps: now available in ArcGIS Pro!

Love them or hate them, contiguous cartograms become the first of a new cartogram specific toolset in ArcGIS Pro.

www.esri.com

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Reposted by Fil

Jonas Oesch @jonasoesch.ch · May 14

Better world maps for mobile!
Despite years of mobile-first design, there’s been little experimentation in this area. So we designed our own at NZZ – and validated it in a large user study.
Summary of the paper: jonasoesch.ch/articles/the... 1/3

Two smartphones displaying alternative thematic world maps.
The left screen shows a split-continent map with countries grouped and resized by region (e.g., Europe, Africa, Asia) using color to indicate data levels (legend: Hoch, Mittel, Tief, Sehr tief). Smaller countries like Rwanda and Panama are clearly labeled and more visible due to the rearranged layout.
The right screen displays a bubble map, where countries are represented by circles scaled to population size and shaded by data intensity. Larger countries like China and the U.S. have prominent bubbles, while smaller countries remain visible. Labels indicate population figures for Switzerland and China.

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Reposted by Fil

Fumihiko Ikegami @fikgm.bsky.social · May 12

I am speechless...
>> First fault movement ever filmed. M7.9 surface rupture filmed near Thazi, Myanmar
m.youtube.com/watch?v=77ub...

First fault movement ever filmed. M7.9 surface rupture filmed near Thazi, Myanmar

YouTube video by 2025 Sagaing Earthquake Archive

m.youtube.com

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Robert Simmon @rsimmon.bsky.social · May 10

I love these!

Victoria Rose Richards @aerialembroidery.bsky.social · May 10

Yellow fields or dark green fields? 💛💚 These are the other two aerial embroidery landscapes that will be available on my site later - and I couldn't resist more oilseed fields! The right one started with the fun path shapes :) all here: victoriaroserichards.co.uk/collection/a...

A hand holding an embroidery hoop in front of a brick wall. The hoop depicts an aerial embroidered landscape of bright yellow oilseed fields, green meadows and bushy trees.

A hand holding an embroidery hoop in front of a brick wall. The hoop depicts an aerial embroidered landscape of dark green crop fields, winding dirt roads and fresh grass in the middle, complete with a deep blue-green pond.

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Fil @fil.rezo.net · May 8

The sun rises on the right and sets on the left.

Reposted by Fil

Robert Simmon @rsimmon.bsky.social · May 8

A detail to love in these maps by @naemas.bsky.social: the palette is asymmetric (subsiding values go to -8, uplifting values to +2), underscoring how land in many American cities is sinking much faster than it is rising. wapo.st/3F586ov

#dataviz 📊 #maps #cartography 🗺️

2 by 5 grid of maps showing subsidence rate in 10 American cities, calculated using an average from 2015 to 2021. Houston is dropping most rapidly, with rates over 8 millimeters per year.

Detailed map of land subsidence (red/orange) and rise (green) for Washington, DC. The land is dropping most rapidly in areas of fill (East Potomac Park). Most built-up areas of the sixty are also dropping, but land along the Anacostia River is rising.

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Martin Fleischmann @martinfleischmann.net · Apr 28

Ever needed to simplify street networks? I did. And it is a pain. So we wrote an algorithm that does that for us. And can do for you, as it is available as a Python package called `neatnet`.

Here's a short blog about it - martinfleischmann.net/simplificati... and package - uscuni.org/neatnet

Original network on the left, simplified one on the right.

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Reposted by Fil

Dr Abeba Birhane @abeba.bsky.social · Apr 28

"A new dataset, visualized as maps, reveals the extent to which African workers are indirectly employed in the tech sector, doing content moderation, customer service, and data annotation for AI models, among other jobs." restofworld.org/2025/big-tec...

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British Cartographic Society @bcsmaps.bsky.social · Apr 28

#MapMonday On this day in 1986, 2 days after the nuclear accident at Chernobyl power station, Soviet TV news show, Vremya, announced the event.

This map graphic from www.bbc.co.uk/news/science... shows radiation levels after a study in 2019

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