You can plot another variable using the same technique listed above or return to the region menu with 0 or exit the program with -1 . In WXP, you always use 0 to back up one level and -1 to exit out of the program. If you exit the surface plotting program, you will return to the Plotting data menu. This is a bit more relevant since the data must be fit to a grid before they can be contoured. The grid is also defined by the region.
Lets select a temperature plot.
The order in which these prompts appear are different in WXP 5. This new order is required in order to do overlay and looping. These features will be explained later. Since we are contouring data, a contour interval must be specified. The contour interval specifies which values are to be contoured.