The GMAP Procedure

ID Statement

Identifies the variable or variables in the input data set(s) that define map areas.

Requirements:

At least one id-variable or geo-variable is required.

ID id-variable(s) | geo-variable;

Required Arguments

id-variable(s)

identifies one or more variables in the map and response data sets that define map area. This argument is used only when map and response data sets are specified. If a feature table is specified, then specify a geo-variable instead.

Every variable that is listed in the ID statement must appear in both the map and response data sets. The variable identified by the id-variable(s) argument can be of type numeric or character and should have the same name, type, and length in both the response and map data sets.

Note: If the ID variables in the response data set and map data set do not have the same length, then your map areas might not be drawn correctly. [cautionend]

Featured in:	Producing a Simple Block Map, Assigning a Format to the Response Variable, and Producing a Simple Choropleth Map
See also:	About Identification Variables

geo-variable

identifies the $GEOREF formatted variable in the feature table containing the spatial geometry information for the map. The variable identified by the geo-variable argument must be of character type.

Featured in:	Creating a Map Using the Feature Table
See also:	About Identification Variables

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