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GPROJECT Procedure
Syntax
Procedure Syntax
PROC GPROJECT Statement
ID Statement
Overview
Concepts
About the Input Map Data Set
About Coordinate Values
About Types of Map Projections
About Projection Parameters Data Sets
Using
Examples
Using Default Projection Specifications
Emphasizing Map Areas
Clipping an Area from the Map
Projecting an Annotate Data Set
References
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
Syntax
Optional Argument
Details
Syntax
ID
<
id-variable(s)
>
;
Optional Argument
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.
Details
Tip
You can use the ID statement without specifying an ID variable to project non-polygonal data (for example, annotation points.)
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