vis4 | information visualizationA weblog about information visualization, flash and some related stuff…
If you’re using Piwik, the open source web analytics tool, then you probably already missed a map visualization of your visitors location, which is a standard feature of all major web analytics tools. As I really like the idea of open source and decentral web analytics and also gained some experiences on map visualizations, I [...]
in tools,visualizations, on July 25, 2010
Simplification is a common task in vector-based map visualization. In some situations you don’t want to display a map in its full resolution for reasons like the overall filesize and the rendering time. One major class of simplification algorithms works by removing some vertices without moving the remaining ones. While there are already some good [...]
This is a small class that I use very often. Its purpose is to simplify the execution of methods after a specific delay. Normally you would have to create a new Timer instance, attach an event listener for the TimerEvent.TIMER event and find a way to store the arguments that you want to pass to [...]
in coding, on July 01, 2010
This is an AIR application I built for an assignment in the course Interactive Systems at the university. This video demonstrates all features like touch guestures and filtering. Since I don’t own a touchscreen, this is only a “fake” touch video. I’d love to try this out on a real touchscreen.
in coding,visualizations, on June 21, 2010
In the last part I gave five improvements to the charts that are shown in the WordPress.com Stats plugin. I ended with the weekly visits chart, so now I conclude with improvements for the monthly visits chart and presenting the idea of putting all the three into one chart.
in criticism,visualizations, on June 07, 2010
WordPress.com Stats is the most used statistic plugin for wordpress (with over 1.5 mio downloads so far). It offers a very simple way of collecting anonymous visit statistics and has a nice backend that lets you explore the data using line charts and tables. I keep using this plugin since the very beginning of this [...]
in criticism,visualizations, on
There are a lot of nice text features in the new flash text layout framework but obviosly there is still one important feature missing: Hyphenation. Until today, there is no native hyphenation support in the flashplayer. I decided to fill this gap by porting the Hyphenator.js library by Mathias Nater to ActionScript. In this post [...]
Many people are talking about html5 and the death of Flash in these days, so I decided to do a small speed comparison of map renderings between HTML5 and Flash. I took the quick and dirty example from my previous map rendering tutorial and ported it into html5/javascript. The only thing it does is reading [...]
This tutorial is the third part of a tutorial series about customized map projection in flash/actionscript. It demonstrates how to draw a world map using the as3-proj library and some helper classes. I assume that we read in a shapefile using the SHP library as shown in the previous tutorial.
This tutorial is the second part of a tutorial series about customized map projection in flash/actionscript. It shows how to import a shapefile into ActionScript via the SHP library by Edwin van Rijkom.
Gregor Aisch is a german web developer and student in computational visualistics at the University of Magdeburg.