LINE Subcommand (GRAPH command)
LINE
creates
one of five types of line charts using the keywords SIMPLE
, MULTIPLE
, DROP
, AREA
, or DIFFERENCE
.
- Only one keyword can be specified, and it must be specified in parentheses.
- When no keyword is specified, the default is either
SIMPLE
orMULTIPLE
, depending on the type of function/variable specification.
SIMPLE. Simple line
chart. A simple line chart is defined by a single function
and a single BY
variable or
by multiple functions and no BY
keyword. This is the default if no keyword is specified on LINE
and the data define a simple line.
MULTIPLE. Multiple line
chart. A multiple line chart is defined by a single function
and two BY
variables or by
multiple functions and a single BY
variable. This is the default if no keyword is specified on LINE
and the data define a multiple line.
DROP. Drop-line
chart. A drop-line chart shows the difference between
two or more fluctuating variables. It is defined by a single function
and two BY
variables or by
multiple functions and a single BY
variable.
AREA. Area line chart. An area line chart fills the area beneath each line with a color or pattern. When multiple lines are specified, the second line is the sum of the first and second variables, the third line is the sum of the first, second, and third variables, and so on. The specification is the same as that for a simple or multiple line chart.
DIFFERENCE. Difference
area chart. A difference area chart fills the area between
a pair of lines. It highlights the difference between two variables
or two groups. A difference area chart is defined by a single function
and two BY
variables or by
two summary functions and a single BY
variable. If a second BY
variable
is used to define the two groups, the variable must be dichotomous.