Examples (CASEPLOT command)

CASEPLOT VARIABLES = TICKETS
  /LN
  /DIFF
  /SDIFF
  /PERIOD=12
  /FORMAT=REFERENCE
  /MARK=Y 55 M 6. 

• This example produces a plot of TICKETS after a natural log transformation, differencing, and seasonal differencing have been applied.
• LN transforms the data using the natural logarithm (base e) of the variable.
• DIFF differences the variable once.
• SDIFF and PERIOD apply one degree of seasonal differencing with a periodicity of 12.
• FORMAT=REFERENCE adds a reference line at the variable mean.
• MARK provides a marker on the plot at June, 1955. The marker is displayed as a horizontal reference line.