Author: Ralph Straumann

Swiss maps on your website 2

Swiss maps on your website

Yesterday in the late afternoon the Swiss Federal Office of Topography (Swisstopo) declared (German) the exposure of maps via web service and opening up of their API (press release also only in German) through Swisstopo web access (brief description in English) with the following two options: WMTS option (Web Map...

Real-time visualizations of Singapore 0

Real-time visualizations of Singapore

In cooperation with local partners MIT’s Senseable City Lab has developed six real-time visualizations of the city of Singapore which is on display since April 8 in the exhibition LIVE Singapore!, co-curated with the Singapore Art Museum.

New method locates you within a few hundred metres 0

New method locates you within a few hundred metres

A new method developed by Wang et al. claims to be able to geolocate IP addresses much (they claim 50 times) more accurately than has been previously feasible. The new method uses a three-tier approach: 1) sending a data packet and measuring how long it...

Processing 0195 0

Processing 0195

Starting from yesterday the Processing team offers Processing 0195 pre-release for download. Lots of bugs have been fixed and 0195 is considered a stepping stone for a Processing 1.5 stable release in a few days. (via Ben Fry)

GoopenStreetMaple: Information wants to be free 4

GoopenStreetMaple: Information wants to be free

A rant just arrived in my inbox, by Mikel Maron via the Geowanking mailing list. While I think Mikel has some valid points, I am still (naïvely?) optimistic that the bleak picture he paints will not materialise in really bad outcomes. Hopefully. But who knows....

Typealyzer: Analysing blog(ging) types 0

Typealyzer: Analysing blog(ging) types

Recently, I was pointed to Typealyzer, a tool for analysing blog types or, actually, the personality types of the people behind the blog. The information is visualised in a spider chart with eight personality dimensions. Typealyzer is the doing of Mattias Ostmar and Jon Kågström,...

Cartographic study of musical incest 0

Cartographic study of musical incest

A friend of mine discovered the Seattle Band Map (a.k.a. Cartographic Study of Musical Incest), a project by radio host Rachel Ratner, designer Keith Whiteman and computer scientist Golf Sinteppadon. As Rachel Rutner describes in the project’s first blog post, she started the map as a nerdy personal project....

OpenWhateverMap 0


As a sort of April fool’s joke (I guess) and a pun on the Open<XY>Map naming scheme somebody (Grant Slater of Firefishy?) set up an OpenWhateverMap: It doesn’t quite deliver on the promise though, IMO, since it shows ‘only’ differently rendered OpenStreetMap tiles. It...

Potato earth 1

Potato earth

Above picture shows a potato-shaped earth. It’s called a geoid and shows the actual (but highly exaggerated) form of our planet. The surface of potato earth represents the form of an ideal surface which water would adopt if it covered the whole earth and if...

Citation donuts 0

Citation donuts

Today’s Economist‘s Daily Chart features a diagram of scientific citations per country: The diagram has two parts: a donut chart showing the proportion of citations per country for 1999-2003 and one for 2004-2008. The (not terribly surprising) story (or at least the interpretation of the...


Geoprofiling using cellphone data (and some volunteered information)

By filing a legal suit against Deutsche Telekom German politician Malte Spitz (Green party) was able to obtain data recorded under the German preventive data retention act. He chose to publish the data which was collected in the timespan from August 2009 to February 2010...

Books on OpenStreetMap 0

Books on OpenStreetMap

While being familiar with the context of, and – from a GIS perspective – research into, OpenStreetMap (OSM) and other crowdsourcing efforts in the geospatial field, I was not aware that there are books dedicated to OSM. Over at Po Ve Sham Muki Haklay hosts...