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SUBGROUP Variable

Type:	Numeric or character; must match the type of the SUBGROUP variable used in the GCHART procedure.
Length:	Should match the length of the SUBGROUP= variable in the GCHART procedure.
Default:	none
Restriction:	The bar charts must have been produced using the SUBGROUP= option.

subgroup-value

references value(s) of the SUBGROUP= variable in the GCHART procedure either as a variable name or as an explicit data value. Subgroup-value can have one of the following forms:

subgroup-variable	the name of a subgroup variable.
subgroup-data-value	a specific numeric data value.
subgroup-data-value	a specific character data value.

Generally, specify a variable name if you want to annotate all of the bars in a horizontal or vertical bar chart. To annotate a bar chart for a specific value of the SUBGROUP variable, specify a specific value.

Functions

You can use the SUBGROUP variable only with the data coordinate system 1, 2, 7, or 8, and with these functions:

BAR	PIE	POLY
DRAW	PIECNTR	POLYCONT
LABEL	POINT	SYMBOL
MOVE

Details

Using the SUBGROUP variable is similar to using the X and Y variables with data system coordinates to position the graphics elements in subgroup segments in vertical and horizontal bar charts.For example, in a vertical bar chart that produces a bar for each city in a data set, you can easily label the subgroups in each bar by setting subgroup-variable to the GCHART variable by which the bar is being subgrouped. This variable provides the y coordinate of the label.

The MIDPOINT variable works well with the SUBGROUP variable to provide the x coordinate. In this example, if you set the MIDPOINT variable to the GCHART variable that contains the names of the cities, the MIDPOINT variable provides your x coordinate. Rather than providing the X and Y variables, you would use the SUBGROUP and MIDPOINT variables. Using the SUBGROUP Variable to Position a Label in a Bar Chart shows how the SUBGROUP variable works with the MIDPOINT variable to label the bars of a vertical bar chart.

Using the SUBGROUP Variable to Position a Label in a Bar Chart

The label showing the number of printers sold in Atlanta is positioned by the values that are assigned to these Annotate variables:

• MIDPOINT=CITY (where CITY is a variable in the GCHART data set)

• SUBGROUP=ITEM (where ITEM is a variable in the GCHART data set).

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