Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computer programming contexts, a data cube is a three- (or higher) dimensional array of values, commonly used to describe a time series of image data. If the images are in color, then the array is generally four-dimensional, with the dimensions representing image X and Y coordinates, time, and RGB color plane. Many high-level computer languages treat data cubes and other large arrays as single entities distinct from their contents. These languages, of which APL, IDL, NumPy, PDL, and S-Lang are examples, allow the programmer to manipulate complete film clips and other data en masse with simple expressions derived from linear algebra and vector mathematics. Some languages (such as PDL) distinguish between a list of images and a data cube, while many (such as IDL) do not.

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