My first D3 graph

I’m trying to master D3, a javascript library for creating (interactive) web graphics. As an excercise, I redid this graph, which uses Eurostat data on the percentage of the population who have ever written a computer programme.

I can’t say it’s a very good graph: some of the most intriguing aspects of the data have to do with changes over time (decline in some countries, rather large growth in Finland, implausible fluctuations in the Netherlands), which don’t show very well in my graph. Nevertheless, it feels good to have coded my first interactive D3 graph.

P.s. the graph may not be visible in older versions of internet explorer.

ATMs and cycle paths

The habits of cyclists are shaping cities like Amsterdam. “There are many ATMs along the main bicycle path network”, urban planner Marco te Brömmelstroet told Vogelvrije Fietser, the magazine of cyclists’ organisation Fietsersbond.

The map above shows Amsterdam’s main cycle path network (provided by the city as open data) and the location of ATMs. It appears that many ATMs are indeed located near cycle paths. Exceptions include shopping areas such as the Kalverstraat, Gelderlandplein and Bijlmerplein. (I tried to calculate the distance between ATMs and cycle paths but I couldn’t get this to work in QGIS.)

Data viz course assignment: bailout and votes

The fourth assignment of the data visualisation course was to do something with this data on unemployment in US states, published by the Guardian Data Blog. My project could be summarised as ‘It’s the unions, stupid’.

P.S. I didn’t post my work for the third assignment on this blog. I’m afraid it wasn’t any good.

Update - Elsewhere, the impact of the bailout on the election is questioned as well.


Faux Amsterdam School

Faux Amsterdam School

Housing corporations are demolishing a number of Amsterdam School housing blocks in the Transvaalbuurt in Amsterdam. Not spectacular Amsterdam School as in Spaarndammerbuurt or P.L. Takbuurt, but still. The other day, I noticed that a new building at this location is almost finished. It’s a striking imitation of the Amsterdam School, with brick reliefs, rounded balconies, window patterns and all.

I actually found a document (pdf) of the Oost District stipulating that the original architectural characteristics must be maintained and even prescribing the shape of the corner. One could argue that such a meticulous imitation of a historical style is a bit kitschy, but I think that in this case the result is pretty decent.


The Dutch bicycle


The ‘traditional’ Dutch bicycle originates in British and French predecessors, Zahid Sardar argues in his new book The Dutch Bike. Still, manufacturers cultivated the image of a typically Dutch, utilitarian product that has remained basically the same because it didn’t need improvement. As Timo de Rijk notes in the preface to the book:

Whereas foreigners found the Dutch bike heavy and unwieldy, here it was considered solid and indestructible, and in return the light-weight aluminium bicycles from France were openly maligned as inferior and needlessly equiped with ostentatious and fragile derailleur gears.

In the early 20th century, there were 4,000 bicycle brands in the Netherlands. Sardar refers to well-known manufacturers like Gazelle and Batavus as well as local brands in cities like Utrecht. He discusses the origin of the omafiets and its connection with women’s emancipation, as well as many other cultural and design aspects of the history of the Dutch bicycle.

In addition to the text, there is a wealth of historical photographs, advertisements, a collection of great head badges and other material. Then, at about two-thirds of the book, Sardar turns to modern Dutch bicicycle design, which is a bit of an anticlimax: most of these bicycles look rather silly. Take for example the Van Moof (no match for the elegant Joep) or the OV-fiets (the highly practical bicycle for rent at railway stations and other locations) - not to mention e-bikes and wooden bicycles.

Against this background, it’s good to see that the hippest bicycles in Amsterdam are currently old (girl’s) road bikes. With derailleurs.

For some reason iPhones appear to be unable to show photos from the road bike set and instead show random photos from my photostream.