CHART Expression (XGRAPH command)

The chart expression defines the data and the role of that data in the chart. It also specifies the data element type and any clustering and stacking. For clustered and stacked charts, the chart expression specifies whether color or patterns are used to distinguish the clustered and stacked groups. For charts of individual cases (that is, when $CASENUM defines a categorical axis), the chart expression can also specify a label variable.

• The CHART keyword is optional. If it is used, it must be followed by an equals sign (=).
• The order within the chart expression matters. The yvars (the y dimension) must be first, followed by xvars and then zvars.
• The final BY variable is used as the splitter variable in a population pyramid when the COORDINATE subcommand specifies SPLIT.
• There is a limit to the number of stack and cluster specifications. There can be two clusters, or one stack and one cluster.