Overview (TSPLOT command)
TSPLOT
produces
a plot of one or more time series or sequence variables. You can request
natural log and differencing transformations to produce plots of transformed
variables. Several plot formats are available.
Options
Modifying the Variables. You can request
a natural log transformation of the variables using the LN
subcommand and seasonal and nonseasonal
differencing to any degree using the SDIFF
and DIFF
subcommands. With
seasonal differencing, you can also specify the periodicity on the PERIOD
subcommand.
Plot Format. With the FORMAT
subcommand, you can fill in the space
on one side of the plotted values on plots with one variable. You
can also plot a reference line indicating the variable mean. For plots
with two or more variables, you can specify whether you want to join
the values for each observation with a vertical line. With the ID
subcommand, you can label the horizontal
axis with the values of a specified variable. You can mark the onset
of an intervention variable on the plot with the MARK
subcommand.
Split-File Processing. You can control
how data that have been divided into subgroups by a SPLIT FILE
command should be plotted using
the SPLIT
subcommand.
Subcommand Order
- Subcommands can be specified in any order.
Syntax Rules
-
VARIABLES
can be specified only once. - Other subcommands can be specified more than once, but only the last specification of each one is executed.
Operations
- Subcommand specifications
apply to all variables named on the
TSPLOT
command. - If the
LN
subcommand is specified, any differencing requested on thatTSPLOT
command is done on the log-transformed variables. - Split-file information is displayed as part of the subtitle, and transformation information is displayed as part of the footnote.
Limitations
- Maximum of one
VARIABLES
subcommand. There is no limit on the number of variables named on the list.