I have a question that I'd like to get some inspiration for. I am trying to plot errorbars for a problem that is modulo 180. This means, if I have a point at 174, the 'lower' error bound could be 160 and the 'upper' error bound 8 because we start counting from zero at 180. The figure is also bounded between 0 and 180, so the error bars need to be able to correctly deal with the borders. I have not succeeded to solve the problem using the errorbar package. Does anyone have an idea how to elegantly solve this?