Understanding Data Layout
The 3D chart displays three-dimensional data. Each data point consists of an X/Y Cartesian coordinate and a Z elevation value. It charts surfaces that are increasing in X and Y and cannot chart surfaces that fold back in X or Y (such as a sphere).
The data must be supplied in one of three basic layouts, Grid, Irregular Grid, or Point. Data can come from many different sources, such as data files or the results of mathematical formulae. You can load and save data files, and customize the data itself, using the Property Pages.
Grid Layout