Thematic Mapping Timeout

The summer and everlasting days are here. I need to prioritize my free time in the upcoming months. All the work reflected on this site has been unpaid - and it won't be continued unless I'm able to earn a salary...

I wish my readers a great summer (or winter if you're down under)!

Comments

Jody Garnett said…

Thanks for keeping us entertained; and please enjoy the summer.

30 May 2009 at 08:04

Mateusz Loskot said…

Bjørn,

Thanks for showing new ways of exploiting and enjoying the geoweb stuff. What you've been presenting here, I consider myself as highly innovative.

Enjoy the summer!

30 May 2009 at 17:01

andrea said…

Have a nice summer and thank you for all.

All the best,

a

31 May 2009 at 19:07

manuela said…

Thank you for sharing your great work! I wish you a wonderful summer.

2 June 2009 at 22:20

Anonymous said…

I like the theme, the content of this post is weak, but at least he can dance after this. :-)

14 July 2009 at 22:58

Creating a WebGL Earth with three.js

This blog post will show you how to create a WebGL Earth with three.js , a great JavaScript library which helps you to go 3D in the browser. I was surprised how easy it seemed when reading a blog post by Jerome Etienne . So I decided to give it a try using earth textures from one of my favourite cartographers, Tom Patterson . WebGL is a JavaScript API for rendering interactive 3D graphics in modern web browsers without the use of plug-ins. Three.js is built on top of WebGL, and allows you to create complex 3D scenes with a few lines of JavaScript. If your browser supports WebGL you should see a rotating Earth below: [ Fullscreen ] To be able to display something with three.js, you need three things: a scene, a camera and a renderer. var width = window.innerWidth, height = window.innerHeight; var scene = new THREE.Scene(); var camera = new THREE.PerspectiveCamera(45, width / height, 0.01, 1000); camera.position.z = 1.5; var rende...

Terrain building with three.js

In my last blog post , we converted a digital elevation model (DEM) to a WebGL-friendly format ( i.e. easy to transfer and parse by JavaScript in the browser). In this blog post, we'll use the elevation data to build a terrain mesh with three.js . First we need to transfer the terrain data to the browser. The elevation values are stored in a binary file as 16-bit unsigned integers. This page explains how you can send and receive binary data using JavaScript typed arrays. I've created a TerrainLoader by adapting the XHRLoader . You can also use this function: function loadTerrain(file, callback) { var xhr = new XMLHttpRequest(); xhr.responseType = 'arraybuffer'; xhr.open('GET', file, true); xhr.onload = function(evt) { if (xhr.response) { callback(new Uint16Array(xhr.response)); } }; xhr.send(null); } Loading elevation data with the Terrai...

Thematic Mapping Engine

It's time to introduce the Thematic Mapping Engine (TME). In my previous blog posts, I've shown various techniques of how geobrowsers can be used for thematic mapping. The goal has been to explore the possibilites and to make these techniques available to a wider audience. The Tematic Mapping Engine provides an easy-to-use web interface where you can create visually appealing maps on-the-fly. So far only prism maps are supported, but other thematic mapping techniques will be added in the upcoming weeks. The engine returns a KMZ file that you can open in Google Earth or download to your computer. My primary data source is UNdata . The above visualisation is generated by TME ( download KMZ ) and shows child mortaility in the world ( UNdata ). The Thematic Mapping Engine is also an example of what you can achieve with open source tools and datasets in the public domain: A world border dataset is loaded into a MySQL database . The same database contains tables with statistics ...

MasterMaps

Search This Blog