A four-dimensional data cube

• The world is a four-dimensional space, with three space dimensions and one time dimension.
• Data cubes are arrays with one or more array dimensions associated with space and/or time.
• But we really mean hypercubes (or hyper-rectangles) because we rarely deal with three-dimensional structures.

Colour image data always has three bands(blue, green, red) and we added near infrarred (nir). Here we show a four dimensional cube layed flat as a facet plot. Two dimensions (x and y) are aligned with the dimensions bands and time.