Graphing air quality readings from several major Chinese centers: Beijing, Shanghai, Guangzhou & Chengdu.
This is the source code of the project which is viewable at http://kopf.github.com/chineseair/
These files may be of interest:
chineseair/updater.py, which scrapes the data from twitter feeds, saving it tojavascripts/data.js, which is loaded insideindex.html