Simple Bar Chart with Bar for All Categories (GPL)

Figure 1. GPL for simple bar chart with bar for all categories

* Open sample file Employee Data.sav.
GGRAPH
  /GRAPHDATASET NAME="graphdataset" VARIABLES=jobcat salary
  /GRAPHSPEC SOURCE=INLINE.
BEGIN GPL
  SOURCE: s=userSource(id("graphdataset"))
  DATA: jobcat=col(source(s), name("jobcat"), unit.category())
  DATA: salary=col(source(s), name("salary"))
  SCALE: linear(dim(2), include(0))
  GUIDE: axis(dim(2), label("Mean Salary"))
  GUIDE: axis(dim(1), label("Job Category"))
  ELEMENT: interval(position(summary.mean((jobcat+"All")*salary)))
END GPL.

Note: Using "All" as the string is arbitrary. Any string would work (e.g., "Total" or "All Categories"). Because it is blended with the jobcat categorical variable, the string acts like a new categorical value. This value is the same for all cases in the dataset. Therefore, the bar associated with that string shows the result for all cases in the dataset.

Figure 2. Simple bar chart with a bar for all categories