Has mentioned in my previous post the way I had looked at reproducing Nightingales old diagram was somewhat flawed. The code below produces rose diagrams in Processing correctly.

A couple of things to remember if your just starting to use processing:

Data visualisation has been my pursuit of choice over the past few weeks, this has involved a lot reading, trying to teach my self how to draw and eating of cake. One of the most interesting stories about graphs I've come across, involves and the diagrams she used to highlight the adverse effect of unhygienic conditions in the army.