Above we described how to calculate and map angle-dependent peak amplitudes. Yet, we are missing a general parameter able to describe the order and anisotropy in specific regions of an image. To indicate the level of anisotropy in a selected region or window, we need to determine to which extent neighbouring windows share the same angles and amplitudes. Here, we built upon a concept introduced earlier where an order parameter was obtained within a collection of window regions . Specifically, the parameter was calculated using the average cosine of the squared difference between the angle representing a central area and the angles obtained from surrounding regions (Eq. 2)