Free geographical data: Installment 1
National Land Survey of Finland: Geoscience Australia: Ordnance Survey
kostas
How to copy a file to “clip board” memory
You have a file sitting on your disc. You want to put a copy of the contents in your OS “clip board” so that you can paste it somewhere, e.g. on a website, without having to open the file in…
Free map tiles
Map Tile Sources Here is a list of free sources for map tiles. I’ll expand this list as I find more free tiles. Notice that some websites require an attribution. I’ll perhaps update this post with the attribution line for…
Simple Rest API for storing “point” observations
Database stuff First I’ll describe the database that backs the service. PostGIS database backend Here is how to make a simple table in PostgreSQL, that can store geo-tagged “observations”. It uses a hstore type for key-value pairs and a geography…
Danish Government Basic Data program 2012-2016
The Agency for Digitisation in Denmark has just published their agenda for publication of so called “Basic Data”. The following page is in english: Good Basic Data for Everyone – a Driver for Growth and Efficiency
Podcast: Trends in high availability and fault tolerance (2009)
An interview with DiDio by Karen Guglielmo, executive editor at SearchCIO-Midmarket.com. (my local copy)
Podcast: Interview with Werner Vogels (2006)
Below is an interview with Werner Vogels, CTO@AWS. (my local copy). First some quotes: “Ultimately developers don’t care about SOAP and REST, as long as the data is delivered. You don’t need to buy into some big revolutionary approach”…
Protected: Starting up a database reading group!
There is no excerpt because this is a protected post.
How does the number of leafs on a tree grow with the height of the tree?
As a was lying on my back in the University park to day, resting a bit between reading papers (more on that later), I looked up at a pine tree and asked myself a very computer sciencey question. How does…
Design space of distributed file systems
Warning: This is work in progress, so this post will be updated TODO: Make a table of the file systems mentioned e.g. in CRUSH paper (related work section). Design space A subset of properties that can considered when designing a…