Division by Zero – Sometimes Usefull

“Zeroworld”, a recent episode of the WNYC podcast Radiolab, examined the possibility of division by zero. The discussion turned mostly metaphysical and got many listeners so angry that they went on to rant on Reddit. I understood this episode more as a fun thought experiment than as a formal proposal. But it also reminded me of some of […] Continue Reading…

Correctly sort Bibliographic Entries with Diacritics in LaTeX (natbib, BibTeX)

LaTeX started as an ASCII thing for English speaking nerds. Only later did people start to use it all over the word, in many languages from Cezch to Hindi. We now have XeTeX and LuaLaTeX. But like the serpent Sesha in the Hindu mythology, some of that early ASCII universe remains, notably in the BibTex part of things.

BibTeX […] Continue Reading…

Climate Change Time Series Visualization with Polar Coordinates in R

This graphic appeared in social media lot in the last days

I wondered how it would render on polar coordinates. So I made an R script to do so. The script is reusable for other data sources as I show below. So reuse, enjoy, and make useful.

The plotting function

seasonplot <- function(tsdata,maintitle,source,legxleft,legxrigth,legytop,legybottom) {
# drawing paremeters
[…] Continue Reading…

Analyse de séries temporelles avec R

Une “série temporelle” est une suite d’enregistrements d’une variable faits au cours du temps. Cette variable peut être la température, la fréquence d’accidents routiers ou l’amplitude du son enregistré par un microphone. Les mesures peuvent être prises à des intervalles réguliers ou pas.

Pour avoir une base de discussion, préparons d’abord quelques données fictives. Ne vous inquiétez pas si […] Continue Reading…

Figures and Maps of Concepts

This blog entry is work in progress… Please be patient, more content is comming soon. Meanwhile, you can read other posts.

Concepts are encoded in most artworks, at least in all that make it to the museum and visiotors bother to see and acedmics to write about. I focus here on major examples.

Psyche and knowledge

Sigmund Freud

The ego (Ich), the […] Continue Reading…

Cartographie et géomatique avec R (2023)

Deux modules R principaux servent aujourd’hui pour le traitement de données géomatiques:

le module sf (simple features) dédié aux géodonnées de type vecteur, qui rassemble les développements antérieurs réalisés notamment dans les modules sp, rgdal et rgeos.

Le module terra, dédié aux géodonnées de type raster.

Pour comprendre ces modules R en détail, je vous recommande l’excellente documentation de Timothée Giraud […] Continue Reading…

Railway Track Gauge: a Material Substrate of Nostalgia and Defiance

Railway track gauge in Eurasia and North Africa. Source: openrailway.org

A look at the global map of rail track gauges immediately reminds you of the current invasion of Ukraine. There is a material substrate of the putinist nostalgia of the Muscovite Empire. Far more than a purported linguistic or cultural proximity of the ex-Soviet states, this substrate of steel […] Continue Reading…

Imager l’espace vécu – Médiographie

Inspirations (exemples génériques)

KANTAR Information is Beautiful Awards

D3 : documents réalisés avec Data Driven Documents

Visual Cinnammon (site de @NadiehBremer)


Information is beautiful


Visual Complexity

Livres et articles argumentés

Cartographie générale

Aït-Touati, F., Arènes, A., & Grégoire, A. (2019). Terra forma: Manuel de cartographies potentielles. Éditions B42.

Jacob, C. (1992). L’empire des cartes. Approche théorique de la cartographie à travers l’histoire. Albin Michel.

Jacobs Frank, “Strange Maps” (blog […] Continue Reading…

The Man from the Future: The Visionary Life of John Von Neumann — a Foreword

I’ve had the pleasure to write a foreword of the French translation of Ananyo Bhattacharya’s biography of John von Neumann, translated by Anatole Muchnik and now published by Quanto.

You can read the French introduction and have a peek at the book’s first chapter (PDF).

In agreement with Ananyo, here is the English translation.

As you read the biography of […] Continue Reading…

Hypertopia: from Utopia to Omniscience

English translation transcript of my conference given in French at the CERN Globe on September 22nd, 2022, and based on the eponymous book from 2019.

You can see the conference in French on the CERN Globe webpage.

Tonight, I propose to talk about two ideas, two concepts. The first one you already know: the concept of utopia. The other […] Continue Reading…