Uncertain circles, plotter drawing

I've been writing code to create drawings for plotted artwork. This code takes a circle of a fixed circumference, then using a noise algorithm begins to distort it, always maintaining the length of the 'string'.

Currently these works are called 'uncertain circles' and are part of a larger body of work, also involving sculptures. I'm interested in combining coded, digital work, with physical pieces, all of which explore uncertainty and process based outcomes.