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The GPROJECT Procedure

ID Statement

Identifies the variable or variables that define the hierarchy of the current unit areas in the input map data set.
Requirements: At least one id-variable is required.
Featured in: Using Default Projection Specifications.


ID id-variable(s);

Required Arguments


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.

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