With its rich content and well-implemented tagging system, del.icio.us provides a tantalizing data set for would-be information visualizers. Fortunately, the open del.icio.us API allows developers full access to the functionality of the system.

To support the recently launched Processing hacks site I have written up a quick tutorial on how to access del.icio.us with Processing. The hack uses David Czarnecki’s delicious-java library. I also added a simple hack for outputting PostScript vector files.