Sunrise or Sunset? Per Capita GDP Evolution in EU Member States

The infographic above looks like a sunset or a sunrise rendered in an impressionist painting of the pixel age. It illustrates EU’s per capita domestic product from 1998 to 2011, expressed in “purchasing power standard” (PPS). To get the PPS, you divide the per capita GDP by the purchasing […] Continue Reading…

Restore “New > Text file” in Windows’ contextual menu

If you’ve changed your standard .tex file editor to Notepad2 or Notepad++, chances are that the contextual menu entry “Create New > Document file” has disappeared.

To restore it, just save the following code as a .reg file and run it (thanks to Archos alias Limneos for posting the code […] Continue Reading…

The Islands of Jean-Jacques Rousseau

[Une version révisée, en français, de cet article, publiée dans Le Temps, Genève, en 2012, peut être téléchargée ici.]

Jean-Jacques Rousseau would have been 300 years old today. He was already 53 in October 1765 when he left the waves of the Lake Bienne, heart-sick, expelled from the Island of […] Continue Reading…

Colored proportional circles in ArcMap

Bivariate thematic mapping with ArcMap? Yes you can!

Of course, you could also do it in D3.js (including a nice self-generated legend), or with much less effort in Quantum GIS (post in French).

Whatever method you choose, colored proportional circles cannot be drawn directly on polygons, but you can draw them […] Continue Reading…

A mobility network

Methods and tools
After a day and a half of work and fine-tuning, here we go: the commuting network of all individuals either residing, working or studying in the canton Valais. I’ve used R, with the RStudio GUI, and the igraph library for R. My staring point was the mobility […] Continue Reading…

Fifty years of orbital tourism

Today, the United States are celebrating the 50th anniversary of John Glenn’s orbital flight: three tours of the globe in less than five hours. To mark the occasion, Craig Russell of Space Operations Inc., would have liked to see the mission replayed, but relying on private means only, this […] Continue Reading…

Foucault’s left-overs and the urban heterostasis

Michel Foucault, in his 1984 essay Des espaces autres (Other Spaces), coins the term “hétérotopie”. He uses it to designate places evolving on the margin of what we could today call the territory of production. Foucault’s heterotopoi are cemeteries, brothels, prisons, boats, psychiatric hospitals… places inhabited by those who’ve […] Continue Reading…