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Monday, 15 September 2008

Thematic mapping in Norway

I'm about to recover from my workaholism after an extremely busy year in Edinburgh. I've spent the last weeks hiking and biking in the Norwegian mountains. The holidays are over, now it's back to work. This blog post shows how statistical data on a subnational level can be visualised with KML.

I could not find UK data due to lack of data access and restrictive licensing rules. Luckily, Statistics Norway considers official statistics as "a tool for democracy":
"Official statistics and analyses based on statistics shall provide the general public, businesses and the authorities with information about the structure and development of society. Such information strengthens democracy and forms the basis for a sustainable economic, social and environmental development.

To this end, official statistics must be produced on an impartial basis, be of a high quality and made available for the common good of society."

StatBank is an web based data service from Statistics Norway with a liberal licensing policy:
"Statistics Norway permits the material on these pages (text, statistical tables and figures) to freely be stored, printed, copied and circulated. The permission assumes that reference is to be given in direct connection with each table and figure that are used (Source: Statistics Norway)."




The above image and video (download KMZ) show the 2007 population in municipalities of Norway, visualised as a 3-D prism map in Google Earth. The boundaries were downloaded from the Second Administrative Level Boundaries (SALB) dataset, edited according to the latest consolidations, and simplified using MapShaper (the Douglas-Peucker algorithm returned the best result).

This video shows the population change 1951-2007:



Norwegian municipalities are undergoing continuous consolidation and the boundaries in use only represent the current state. Historic boundaries are needed to display the population dataset properly.

4 comments:

Gerardo64 said...

Nice entry BJØRN...I hope some day many countries (including mine, Argentina) will understand the concept about the importance of developing and sharing national geodata. And not only in web map format but in downloadable files, so anyone could use them. What is happening is that governments forget the fact that they produce that data with money given by citizens...so the data is ours.

Maarten said...

Hi,
Another nice piece of work. I tried to to the same for Belgium and found the population data to be freely available at Statbel. However, I couldn't find a vector layer of the municipalities borders. I noticed SALB only offers borders at the provinces level in Belgium, but no municipalities. So I used the centroid coordinates provided by Statbel and represented population data with 3D models. Here you'll find the results: http://www.merkador.com/?q=content/population-belgian-municipalities

Martina said...

I noticed Salb only offers borders at the provices level in belgum.

Garan said...

If you're looking for border data for the EU countries, the Eurostat site has a downloadable pack of shapefiles and their NUTS classification - including for the UK.
http://ec.europa.eu/eurostat/ramon/nuts/home_regions_en.html