Line Chart with Separate Scales (GPL)

Figure 1. GPL for line chart with separate scales

* Open sample file stocks.sav.
GGRAPH
  /GRAPHDATASET NAME="graphdataset" VARIABLES=Date Close Volume
  /GRAPHSPEC SOURCE=INLINE.
BEGIN GPL
  DATA: date = col(source(s), name("Date"))
  DATA: close = col(source(s), name("Close"))
  DATA: volume = col(source(s), name("Volume"))
  SCALE: time(dim(1), dataMaximum())
  ELEMENT: line(position(date*(close/"Close"+volume/"Volume")))
END GPL.