In data visualization, an Andrews plot or Andrews curve is a way to visualize structure in high-dimensional data. It is basically a rolled-down, non-integer version of the Kent–Kiviat radar m chart, or a smoothed version of a parallel coordinate plot. It is named after the statistician David F. Andrews. A value is a high-dimensional datapoint if it is an element of . We can represent high-dimensional data with a number for each of their dimensions, . To visualize them, the Andrews plot defines a finite Fourier series: