This graph type represents a set of data values as a surface. Both rows and columns are represented as edges, rather than separate objects. Data values are represented as the junctions of a row edge and a column edge.
The Surface graph type does more than represent data values as junctions of row or column edges. Data values are also connected diagonally to the neighbors of their neighbors in a row or column. These diagonal connections are not row or column edges, however, and the junctions of diagonal connections should not be confused with data value points.
This graph type can depict negative values. However, there are no visible color changes to help you differentiate negative from positive values. (With other graph types, the top surface of the object changes color, depending on whether the value is negative or positive.) You can only recognize negative values by looking for parts of the surface that dip below the zero-level scale line (as drawn on the back walls of the graph).
Select Options® 3D options to call up the 3D Options dialog window.
The Object size and Number of sides indicators have no effect on the Surface graph type.
With the Surface graph type, you cannot always click on the 3D frame border (around the base of the graph) to request particular 2D graphs. (See "Using the Selection Bars" in the section