GPROJECT Procedure

ID Statement

Identifies the variable or variables that define the hierarchy of the current unit areas in the input map data set.

See:	Using Default Projection Specifications

ID <id-variable(s)>;

id-variable(s): specifies one or more variables in the input map data set that identify unit areas. Id-variable can be either numeric or character.

Each group of observations with a different ID variable value is evaluated as a separate unit area.

Tip

You can use the ID statement without specifying an ID variable to project non-polygonal data (for example, annotation points.)