3D layer types

Three-dimensional (3D) geographic information system (GIS) data incorporates an extra dimension - a z-value - into its definition (x,y,z). Z-values have units of measurement and allow the storage and display of more information than traditional two-dimensional (2D) GIS data (x,y). Even though z-values are most often real-world elevation values - such as the height above sea level or geological depth - there is no rule that enforces this methodology. Z-values can be used to represent many things, such as chemical concentrations, the suitability of a location, or even purely representative values for hierarchies.

For more information on the different types of 3D data, see Fundamentals of 3D data.

For more information on the roles of 3D layers in Globe, see About setting the role of a 3D layer. 

For more information on the roles of 3D layers in Scene, see About setting the role of a 3D layer in ArcScene.