An alternative to the circular histogram (see cyclic data) as a method of displaying grouped cyclic data. The areas of the sectors are proportional to the corresponding frequencies.
Rose diagram. A rose diagram illustrates the frequencies with which different directions occur. In this case the directions refer to the movements of Colorado beetles released in a wheat field.
A circular histogram plot which displays directional data and the frequency of each class. Rose diagrams are commonly used in sedimentary geology to display palaeocurrent data (see palaeocurrent analysis), or the orientation of particles. In structural geology rose diagrams are used to plot the orientation of joints and dykes. Wind directions and frequencies can also be plotted on rose diagrams.